____ 10. Four of the five answers listed below are sources of variation in a population. Select the excep-tion. a. mutation c. crossing over e. law of dominance b. sexual reproduction d. independent assortment
My money's on E.
Sexual reproduction
My money's still on E because whether one allele is dominant over the other doesn't affect which alleles are actually present, only which is expressed. A. Mutation plainly introduces change to genetic material: insertions, deletions and replacements of one base with another. B. Sexual reproduction remixes and rematches genetic material among members of the population. C. Crossing over involves the exchange of genetic material between sister chromosomes. D. Independent assortment governs which chromosome winds up in each offspring. All of these are examples of variation in a population.
great website... its a biobook online...breaks down everything http://www2.estrellamountain.edu/faculty/farabee/biobk/biobooktoc.html
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