Essay from the year 2002 in the subject Biology - Genetics / Gene Technology, grade: 2.1 (B), Oxford University (New College), 5 entries in the bibliography, language: English, abstract: The aim of population genetics is to model the dynamics of evolutionary change within and between populations i.e. a group of individuals who exist together in time and space and are capable of interbreeding. In human DNA approximately 0.08% of the nucleotide base pairs varies among individuals and thus populations genetics has been trying to establish why this is so. Four basic evolutionary forces responsible for genetic diversity in populations have been identified: mutation, natural selection, genetic drift and gene flow. Mutations are copying errors during DNA replication and transcriptions, which introduce new alleles into the population. Natural selection is the differential transmission of alleles into the next generation due to the consequences of functional differences on an individual’s survival and reproductive success. Genetic drift is the differential transmission of alleles into the next generation as a result of random sampling and has the greatest potential impact in small populations. Gene flow spreads alleles from one population into another via migration, making them more genetically similar to each other, and countering genetic differentiation by drift. I am going to examine the contribution of genetic drift, gene flow and natural selection to the levels of diversity and composition of genetic polymorphisms in different human populations. Further I am going to examine why some populations have greater diversity than others and compare the patterns of genetic diversity of humans and chimpanzees.
This new edition introduces more problem-solving strategies and new conceptual and challenge problems. Also, each Chapter Review has been enhanced with Learning Goals to reinforce the mastery of concepts for students.
This laboratory manual contains 42 experiments for the standard sequence of topics in general, organic, and biological chemistry.
The book guides students through basic chemistry problem solving with engaging visuals and a focus on developing the math skills necessary to be successful in the course.
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Basic Chemistry
Basic Chemistry, Books a la Carte Edition
Essential Laboratory Manual for General, Organic and Biological Chemistry
The main objective in writing this text is to make the study of chemistry an engaging and a positive experience for students by relating the structure and behaviour of matter to real life.
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Health, Environmental, and Green Chemistry Notes throughout the text relate chemistry chapters to real-life topics in health, the environment, and medicine that are interesting and motivating to students.