15. What is the ultimate source of all variation in and among populations? Genetic mutations that result in viable offspring Factors in the environment that may affect development Diverse habitats O O O Natural selection

woll 4. You have been studying a trait that seems to be present in every generation within 02a particular family. Further, you have observed that every affected offspring has at won least affected parent in any particular generation. bas berswo woll Yang morto vas of oftiziqe om sno vas al Solowoh sdi lozinoo tensy vnam This trait is more likely due to a dominant or recessive allele? a) b) Interestingly, this allele is completely penetrant in the homozygous state while only 75% penetrant in the heterozygous condition. If two heterozygous individuals who carry this allele are mated, what is the expected proportion of affected progeny?

40. Which of the following microevolutionary forces act upon existing variation within a breeding population?   gene flow and natural selection   natural selection and genetic drift   gene flow and mutation   genetic drift , gene flow, and mutation   natural selection, mutation, genetic drift, and gene flow

25. Organisms that reproduce asexually lack mechanisms for generating genetic diversity within a population. True  False