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- What historical, social, religious, cultural, and economic factors promote genetic drift in humans? Can you think of some specific human groups in which genetic drift is likely to have occurred?Natural selection means that the environment favors survival of some genotypes. From where does diversity in genotypes come?What are considered significant factors in maintaining the surprisinglyhigh levels of genetic variation in natural populations ?
- Scientific studies have shown that the majority of human genetic differences worldwide exist within groups (or races) rather than between groups. True or false?How can natural selection favor different phenotypes at different times?Please answer questions below. How do the allelic frequencies of generations 9 to 11 compare with those in generations 1, 2, and 3? How do the allelic frequencies of generations 9 to 11 compare with each other? Cite instances in the natural setting where the phenomenon of genetic drift occurs.
- Why do traits have to be heritable in order for evolution by natural selection to occur?Why is population level genetic variation important for evolution and what causes genetic variation ? How do we detect if evolution is occurring ?Of the three patterns of natural selection presented in this discussion, which one always results in two different phenotypes in the following generations?
- Applying the Hardy-Weinberg equilibrium. Albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. What percentage of the individuals within this population is expected to be heterozygous?Why does stabilizing selection decrease geneticdiversity?You are examining a population of snakes in which 20% of the individuals exhibit the recessive phenotype for albinism. If albinism is exhibited only by the genotype aa, how many snakes out of a population of 100 would you expect to CARRY the albinism allele (so be Aa), but be normal color?