Towards Understanding the Causes of Genetic Diversity

Man, in all his uniqueness, has managed to conquer the world and its inhabitants for thousands of millennia now. Animals and plants have their own unique characteristics too, at least scientifically as well as biologically.Advertising We will write a custom research paper sample on Towards Understanding the Causes of Genetic Diversity specifically for you for only $16.05 $11/page Learn More Scientists and other theorists have been working round the clock to understand the origins and nature of these unique characteristics found in both primate and non-primate organisms (Lahn Ebenstein, 2008). Below, several concepts that are thought to cause genetic diversity are critically evaluated in a bid to offer answers to the myriad of questions on the unique characteristics prevalent in organisms. Genetic diversity is a term mostly used to underscore the â€Å"variation in the nucleotides, genes, chromosomes, or whole genomes of organisms† (Harrison et al , 2004, para. 1). In its most straightforward level, genetic diversity is characterized by variations in the nucleotides, the basic ingredients that forms the DNA contained in the cells of a living organism. The chromosomes residing within the organism’s cells play host to the DNA. Most organisms contain two sets of chromosomes, with a few exceptions that have one, three, or four pairs of chromosomes in a cell. If an organism is diploid (two sets of chromosomes), it means that it has two alleles of each gene (Harrison et al, 2004). Mutation and sexual reproduction comes in since there are the major factors that lead to variation of either one or more alleles contained in each gene (Lewontin, 1995; Harrison et al, 2004). Other biologists and anthropologists are of the opinion that geographical localities and lifestyles are also possible candidates for genetic diversity in primates. Generally, mutations are changes in the structure of the DNA which form the foundation for dissi milarities between related organisms (Lewontin, 1995; TutorVista.com, 2008). Although a single mutation can have an overbearing effect on an organism, most evolutionary variations and spontaneous mutations are as a result of accrual of many mutations in the natural setting. One of the fundamental objectives of all living creatures is to survive. It is therefore imperative for cells to continue reproducing so that the objective can be met (Knight, 2009). During sexual reproduction, an organism inherits alleles from the sperm and ova of both parents.Advertising Looking for research paper on biology? Let's see if we can help you! Get your first paper with 15% OFF Learn More The pairing or copying of these alleles after fertilization to form an offspring can assist to introduce genetic variation which may indeed be of great benefit in the future. This process is called sexual recombination (Harrison et al, 2004; Knight, 2009). An example of such genetic variation can be wi tnessed in the difference in looks between an offspring and its parents. Sexual reproduction introduces the issues of migration and population size. Migration is the progression or movement, in most cases within organisms (USDA, 2006). The chromosomes inherited by the offspring from the parents are bound to change more if there has been a case of migration or hybridization (Harrison et al, 2004). This is especially so if parents of the offspring happen to come from different populations, and therefore posses dissimilar gene pools. In plants, genetic diversity via migration takes place through pollen dispersal or grafting of vegetative stems. Lastly, sexual reproduction, in altering genetic diversity, allows organisms to increase their population size with the aim of maintaining a high competitive advantage over the others (Harrison et al, 2004). This is crucial for survival. Sexual reproduction has the capacity to introduce new and more advanced gene into a population. The essence o f this type of gene shuffling is yet another fundamental foundation for genetic diversity. It cannot escape mention that genetic variation also occurs when alleles of two or more sets of populations mix through migration incase of primates or via pollen and seed dispersal via non-primates (USDA, 2006). It is therefore true to say that genetic diversity is in a constant mode of change – both through time and across geographical localities. Reference List Harrison, I., Laverty, M., Sterling, E. (2004). Genetic Diversity. Retrieved from https://cnx.org/contents/b8pd-bDN@2/Genetic-Diversity Knight, J.C. (2009). Human Genetic Diversity: Functional Consequences for Health and Disease: Oxford University Press. ISBN: 9780199227693Advertising We will write a custom research paper sample on Towards Understanding the Causes of Genetic Diversity specifically for you for only $16.05 $11/page Learn More Lahn, B.T., Ebenstein, L. (2008). Let’s celebrat e human genetic diversity. Nature, Vol. 461, pp. 726-728 Lewontin, R. (1995). Human Diversity, 2nd Ed. W.H. Freeman Company. ISBN: 0716760134 United States Department of Agriculture. (2006). Why is Genetic Diversity always Changing? Web. This research paper on Towards Understanding the Causes of Genetic Diversity was written and submitted by user Dario Harrington to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

White King Red Rubber Black Death Essays

White King Red Rubber Black Death Essays White King Red Rubber Black Death Essay White King Red Rubber Black Death Essay All throughout history, monarchies from all over Europe have been known to exert their power and reign over African countries as well as other southern countries. In most cases, such reign has resulted to the abuse and mistreatment of the native people of the said countries. The film produced and directed by Peter Bates, â€Å"White King, Red Rubber, Black Death,† features a story that follows the said trend. In particular, the film is a showcase of how Leopold II, a Belgian monarch exerted his power brought down terror upon the people of Congo. The story documents King Leopold II’s reign over Congo and the wrath that he brought with him. Between 1885 and1908, Leopold II turned Congo into a labor camp and brutalized the people of Congo, all for the sake of rubber. Congo was rich in rubber, and during that time, rubber was highly in demand as the production of bicycles and cars was increasing rapidly. Every individual in Congo was subjected to Leopold’s abuse. Men who could not produce the required amount of rubber saw their families being held as hostages and starved to death. Even children were not spared from his wrath. Children worked as laborers and late deliveries meant that their hands would be cut off. During the reign of Leopold, it was said that over 10 million people in Congo were killed. It was only through the efforts of a courageous British journalist that such human rights abuses were brought to attention and was finally ended. In a way, the film serves as one of those films that help people understand better the ins and outs of European relations with Africa. Historical accounts often times leave out such events. Such painful truths are often forgotten, ignored or simply hidden. Bates story brings an example of such painful truths to the limelight and orients its viewers to the plight of the people of Congo in the late 19th and early 20th centuries. Bates’ depiction of the story shows his passion for human rights and the abuses committed against such rights. He reveals a reality that has long been ignored. He succeeded in making viewers see that Leopold II is accountable for his actions that led to the multitude of deaths in Congo. More importantly, Bates’ production is one which will leave viewers who are unaware of such abuses in utter shock and pity for the Congolese who suffered in the hand of an oppressor. It is informative and at the same time, it touches the hearts of its viewers and makes people realize the value of their human rights and the protection of such rights. If there is one thing wrong with the manner by which the story was portrayed. It was that it was full of rage. There were certain scenes that were too dramatic that may have made the story a bit too sensationalized. Even the narration was too dramatic. Although such style was utilized to make people realize better the extent of the abuse, it may have dampened the integrity of the film. Understandably, there is indeed bias in Bates’ production. Indeed, Bates’ goal is to show the world the plight of the Congolese under Leopold’s rule. However, the film could have been better if a less passionate portrayal was used. The sensationalism in the film was unnecessary for the story is enough for viewers to see the horror in Congo during the said time. The story speaks for itself and there was no need to add more drama to it. In general, the film was a true eye-opener. It would certainly touch the hearts of people who watch it. Finally, it teaches people to value and protect the human rights of every individual more.

Creating a Plan for a Culturally Diverse Classroom Essay

Creating a Plan for a Culturally Diverse Classroom - Essay Example Classroom differences do not only show ethnic and racial groups but also religious and political groups. These differences may affect the students’ behaviour towards their classmates, teachers and other people. Learning about the diversity in a classroom will not be easy. The differences of the students will take extra effort, patience, creativity, attentiveness and guts on the part of the teacher. However, a teacher must be able to work out the issues and differences in a multicultural classroom to help build a stronger foundation for the students’ growth and development. The teacher should create an atmosphere of tolerance, acceptance, and caring the in environment. This diversity demands more work, sincerity, resolution and understanding. Thus, to address these issues, a multicultural education was developed. According to Gollnick and Chinn (2006), multicultural education is â€Å"educational strategy in which students’ cultural backgrounds are used to develo p effective classroom instruction and school environments.† This educational strategy carries the concept of diversity, equality, culture, social justice and democracy in the classroom (Gollnick, Chinn, 2006). These concepts are the foundational areas that are given importance in the developed strategy. It is very important that we give meaning and sentiments to the issue of multiculturalism. Thus we need to create an atmosphere of tolerance, acceptance, and caring in our classroom environment to promote unity and commonality to the students. Diversity has long been an issue and thus we can only address this if we somehow demand conformity. If we embrace multiculturalism in our classroom, it gives us the chance to practice the students with democracy on which our state was founded. Thus, despite the diversity, we need to commit to find new language of unity and mutuality based on equality and respect and to gain courage to face the fears of differences. Teachers should be able to address the diversity and unequal power relations because these have huge impact on a student’s and group’s capacity to classify and achieve their own ambitions and purpose. These differences can lead to confusion and misperceptions that would eventually cause conflict. In the near future, these differences will end in political alliances. The coalitions respond to both perceived and real dominations and subordinations faced by such groups. Strong feelings of unity and patriotism stemmed from these perceptions and may result in armed conflicts in tribes, ethnic groups, and religious communities and even across the state. Thus, as early as in the classroom, we should be able to help create a unified and unbiased setting despite the differences. The Plan To be able to help address the issue on multiculturalism in a certain classroom, the teacher should be able to implement and handle the class very well. Before anything else, orient the students of the learning activ ities that are going to be implemented and taught during the school year. Also, explain the objectives and outcomes of activities thoroughly. Also, set academic standards and expectation and make sure that these have been explained and understood by the students. Students have different understanding and interpretation of every topic discussed in class. Thus it is very important to explain very well the teacher’

Essay questions Example | Topics and Well Written Essays - 1250 words - 6

Questions - Essay Example Hence the Palestine had to be kept in the hands of Arabs as they hoped that the Arab unity would help forge war against common enemy. However the movement experienced a major setback in the defeat of Arabs in the Arab Israeli war of 1967 and death of Abdul Nasser in 1970. Jewish nationalism also caused the conflict due to the numerous persecutions and massacres they faced. They were also expelled in most European countries and hence had to look for their own land free from persecution that they believed was Israel. Another reason for this was the British decision to end mandate that made Arabs perceive it as breach of the agreement that made them furious as the British support for their independence was broken. The Arab treatment by the Israeli denied them basic political rights and freedom as they were seen as threat to Israeli. They imposed policies that hurt the Palestinians hence the revolt against the military administration that was set to govern their resident in the West Bank and Gaza. The rise of the Palestinian nationalist movement against state formation led to the 1948 Arab –Israeli war termed as the war for independence. The Arab resistance against giving part of their land to the Jewish without being informed was viewed as a threat to the independence of Palestinian nation. The Israeli also took better part of the land leaving them with worst lands and this angered them leading to conflicts and subsequent formation of the Palestinian Liberation Organization that used terrorism to frighten the Jews to return their land. Zionism was formed as a national movement with an aim or goal to create and support the Jews national state in Palestine that was the ancient home to the Jews. It originated from the eastern and central Europe in the late 19th century. The centre of this movement was established in Vienna. It therefore strived to create a home in

Physiolocal principles For health and social care Essay

Physiolocal principles For health and social care - Essay Example The mandibles are movable joints that help in mastication. The inferior part of the skull forms the facial bones that support the eyes, nose, and mouth. These twenty-six bones help in maintaining the shape and posture of the whole body. They include the seven cervical bones at the neck region, twelve thoracic vertebrae at the chest region, five lumber vertebrae at the lower back, one sacral bone and the coccyx bone. The sternum is located medially and the anterior aspect of the chest region. It joined up to the ribs by costal cartilage. There are twelve pairs of ribs joined to the sternum forming a rib cage that protections lungs and heart. The first connect to the thoracic vertebrae with their own cartilage hence called true ribs while ribs eight to ten are false ribs since they indirectly connect to the sternum. Ribs eleven and twelve lack any cartilage for attachment hence known as floating ribs. Upper limbs are connected to the axial skeleton by the pectoral girdle. This part consists of the left and right clavicle bones. The upper limb consists of the humerus, which is the long bone that forms an elbow joint at the junction with radius and ulna bones. The radius is responsible for the turning of the hand over the wrist joint. The digits are made up of three phalanges each apart from the thumbs, which only have two. The pelvic girdle is made up of the right and left pelvic bones that link the lower limbs to the axial skeleton. Femur are the long bones that form the hip joint on connection to the hip bones which is a ball and socket joint and knee joint with tibia and patella bones. The lower leg is made up of tibia and fibula bones that bear most of the body weight. At the proximal end, the tibia and fibula bones form ankle joint with the talus bone of the foot. Posteriorly the foot is consists of tarsal bones and anteriorly metatarsals and phalanges. Bones also function to enable movement through various body joints; the red bone marrow

Personal Ecology :: Creative Writing Essays

Personal Ecology A deep desire to cry. The hanging, haunting chant of Gordon Comes at Night, waves of sweat crystallizing on the skin, loosened joints, unfolded from the lodge into the cold night air. Wiped clean, nothing to say. Reach inside for a voice, a meaning, the distance between the earth and the moon in its fullness. Which orbits which? For a year I sat in the only seat that was not part of the circle. "Me" is still a long way off. Each stanza seems a step in a different direction. For predictive value I wear my lapis necklace, just now Blackfeet-blessed. Gil will become a soulmate but for the time being he is just there. The one I adore I can barely speak to, can barely reach, although he is the nexus of my system. Letting go is a skill. But for all the growth, movement, experience—for all that, I learn, there is loss. Dances and costumes and heart-pounding drumbeats of the powwow hold the mind in temporary suspense. Men of the tribal council give away blankets, toys, dollar bills, scarcely affordable tokens of an amicable nature. I am at peace, but I feel raw, the agony of a first love and an ideal whose flaws I can never know. There is garbage everywhere on the reservation, but people leave an offering of tobacco when they pick sage or sweetgrass—a love and a hate of the land where I expected only love. I gather refuse wherever I go because work is the only sure way to avoid long awkward pauses. This fear—perhaps it is inherited, perhaps it just rubbed off on me, but it is a legacy of my mother. Pause is earned, the awe of an eagle feather pressed into the hands, the return for the playground we build. Gil works just as hard and so we work side by side, joined in this practice of leaving a record behind. Community has many meanings. Even now I know that the real beauty, the real friendship, will come later, when words can supplant presence. But I am still here, you know, extracting something and leaving something behind. If I rub my necklace I can sense the continuity with no center. Practice of leaving a record behind The possibility of a recipe. Our Ahtna friends cook a feast of fresh salmon and banok, fry bread.

Coffee Growers

1. Coffee growers in poor rural areas are paid very little for their crop. What strategies are proposed in this clip for changing that situation?The strategies that are proposed in this clip for changing this situation are for coffee growers to adapt to the fair-trade market. Under the fair-trade market coffee growers will have the chance to a decent market price that will help increase their production. 2. Now that you know something about the â€Å"sociology of coffee† and globalization, will your own consumption habits change at all? Explain why you would change or not your consumption habits.I prefer not to drink coffee as a result my consumption will not change. 3. In what ways is the â€Å"coffee-go-round† an example of what Mills called â€Å"public issues† and â€Å"private troubles?†The public issues are coffee growers in poor rural area are not paid reasonably for their crops. The private troubles are coffee growers are trapped to sell only coca because of the competitive markets and expensive expenses.1. C. Wright Mills said that the sociological imagination comes from our ability to see the connection between â€Å"public issues† and â€Å"private troubles.† How does the narrator of this film make such a connection in his life? What are the â€Å"public issues† and the â€Å"private troubles?† The narrator of this film makes such a connection in his life by connecting his relationship with his brother through his childhood experiences and a tragic accident which created and caused a decision for his brother to go to West Point University and become a Black Hawk pilot for the army that as a result change the narrator’s connection between him and his brother through his childhood. Now having to send American troops to Iraq is a public problem and worrying to have to hear from a love one or relative going to war and not returning back to his family and tragically changing his family’ s life is a private trouble.Article Questions Article 141. How do the authors define â€Å"early adulthood†? How do they explain the incidence of prolonged early adulthood in the United States? Early adulthood is a time of struggle to gain the skills and credentials required for a job that can support the family they wish to start and a struggle to feel in control of their lives or is when people figure out when they want to do and how best to realize their goals. The primary reason for a prolonged early adulthood is that it now takes much longer to secure a full-time job that pays enough to support a family.2. Examine figure 2. How are the lives of young people in 2000 different from those in 1960? What do you think accounts for these differences? The lives of young people in 2000 are less successful completing the transition to adulthood than the lives from those in 1960. Young adults not finding a full-time job that pays enough to support a family.3. Discuss positive and n egative effects of postponing adulthood on parenting. How do you suspect this changes childrearing practices? How does having children change the careers of middle-aged workers? The positive effects of waiting to become a parent while in your adulthood are more likely to leave home, be financially independent, and completed schooling. The negative effects of postponing adulthood on parenting are not likely to be financially independent and completing schooling. Parents who postpone adulthood on parenting are likely to show care and loving towards their children than parents who are trying to complete their adulthood. Having children change the careers of middle aged Article 591. What is the Gautreaux program in Chicago and how is it departure from previous policy? The Gautreaux program in Chicago is an experiment in public housing. Such policies assume that to depopulate the ghetto, gentrify it, or blow it up is effective solution to the problems concentrated in it instead Gautreaux program try to improve the lifestyles and environment around the less unfortunate.2. What is the relationship between the â€Å"quality of life† in neighborhoods and their crime rates (as suggested by the work of Clifford Shaw and Henry  McKay)? The relationship between the â€Å"quality of life† in neighborhoods and their crime rates are lacked to control the behavior of local youth as a result traditions of delinquency are passed on by neighborhood youth.3. Logan refers to studies that used census data to understand variations in crime rates between neighborhoods and the demographic characteristics of their residents. Why is census data a valuable resource in this case? Can you think of ways in which the use of census data in social research might lead to questionable findings? Census data is a valuable resource in this case because it shows the average rates of juvenile delinquency in Chicago tracts that makes some neighborhoods unsafe. We can find out basic info rmation about the size of the population, and its composition by age, gender, race and ethnicity. The use of census data in social research might lead to questionable findings as to understand what are the causes and problems that each individual face.4. To explain the conditions in a neighborhood, Logan suggest we must answer two questions. What are these questions, and how do they differ from the approach of most studies of neighborhood inequalities? First, what happened to these places to create their conditions? Second, how and why do certain kinds of people come to live in places with such problems? The two questions are different from most studies of neighborhood inequalities because most studies of neighborhood inequalities strongly focused on race and education. Coffee growers Coffee growers in poor rural areas are paid very little for their crop. What strategies are proposed in this clip for changing that situation?The strategies that are proposed in this clip for changing this situation are for coffee growers to adapt to the fair-trade market. Under the fair-trade market coffee growers will have the chance to a decent market price that will help increase their production. 2. Now that you know something about the â€Å"sociology of coffee† and globalization, will your own consumption habits change at all? Explain why you would change or not your consumption habits.I prefer not to drink coffee as a result my consumption will not change. 3. In what ways is the â€Å"coffee-go-round† an example of what Mills called â€Å"public issues† and â€Å"private troubles?†The public issues are coffee growers in poor rural area are not paid reasonably for their crops. The private troubles are coffee growers are trapped to sell only coca bec ause of the competitive markets and expensive expenses.1. C. Wright Mills said that the sociological imagination comes from our ability to see the connection between â€Å"public issues† and â€Å"private troubles.† How does the narrator of this film make such a connection in his life? What are the â€Å"public issues† and the â€Å"private troubles?† The narrator of this film makes such a connection in his life by connecting his relationship with his brother through his childhood experiences and a tragic accident which created and caused a decision for his brother to go to West Point University and become a Black Hawk pilot for the army that as a result change the narrator’s connection between him and his brother through his childhood.Now having to send American troops to Iraq is a public problem and worrying to have to hear from a love one or relative going to war and not returning back to his family and tragically changing his family’s li fe is a private trouble.Article Questions Article 141. How do the authors define â€Å"early adulthood†? How do they explain the incidence of prolonged early adulthood in the United States? Early adulthood is a time of struggle to gain the skills and credentials required for a job that can support the family they wish to start and a struggle to feel in control of their lives or is when people figure out when they want to do and how best to realize their goals. The primary reason for a prolonged early adulthood is that it now takes much longer to secure a full-time job that pays enough to support a family.2. Examine figure 2. How are the lives of young people in 2000 different from those in 1960? What do you think accounts for these differences? The lives of young people in 2000 are less successful completing the transition to adulthood than the lives from those in 1960. Young adults not finding a full-time job that pays enough to support a family.3. Discuss positive and negat ive effects of postponing adulthood on parenting. How do you suspect this changes childrearing practices? How does having children change the careers of middle-aged workers? The positive effects of waiting to become a parent while in your adulthood are more likely to leave home, be financially independent, and completed schooling. The negative effects of postponing adulthood on parenting are not likely to be financially independent and completing schooling. Parents who postpone adulthood on parenting are likely to show care and loving towards their children than parents who are trying to complete their adulthood. Having children change the careers of middle aged Article 591. What is the Gautreaux program in Chicago and how is it departure from previous policy? The Gautreaux program in Chicago is an experiment in public housing. Such policies assume that to depopulate the ghetto, gentrify it, or blow it up is effective solution to the problems concentrated in it instead Gautreaux pro gram try to improve the lifestyles and environment around the less unfortunate.2. What is the relationship between the â€Å"quality of life† in neighborhoods and their crime rates (as suggested by the work of Clifford Shaw and Henry  McKay)? The relationship between the â€Å"quality of life† in neighborhoods and their crime rates are lacked to control the behavior of local youth as a result traditions of delinquency are passed on by neighborhood youth.3. Logan refers to studies that used census data to understand variations in crime rates between neighborhoods and the demographic characteristics of their residents. Why is census data a valuable resource in this case? Can you think of ways in which the use of census data in social research might lead to questionable findings?Census data is a valuable resource in this case because it shows the average rates of juvenile delinquency in Chicago tracts that makes some neighborhoods unsafe. We can find out basic informati on about the size of the population, and its composition by age, gender, race and ethnicity. The use of census data in social research might lead to questionable findings as to understand what are the causes and problems that each individual face.4. To explain the conditions in a neighborhood, Logan suggest we must answer two questions. What are these questions, and how do they differ from the approach of most studies of neighborhood inequalities? First, what happened to these places to create their conditions? Second, how and why do certain kinds of people come to live in places with such problems? The two questions are different from most studies of neighborhood inequalities because most studies of neighborhood inequalities strongly focused on race and education.