Biology, 05.05.2020 22:24 afropenguin7371
Populations evolve for many reasons. Suppose there is a small population of birds that have either brown chest feathers or yellow chest feathers, and the allele for the brown feathers is dominant. The frequencies for the two alleles in the population are approximately equal. For each event or condition described below, answer the following questions. What mechanism? Identify whether the event is natural selection, genetic drift, or gene flow. Gene pool effect. Select the best description of how the allele frequencies change. A. Birds with yellow chest feathers attract more mates and leave more offspring. What mechanism is in work here? What is the effect on the gene pool? B. A hurricane kills many birds at random. What mechanism is in work here? What is the effect on the gene pool? C. A conservation group releases several new birds to the area, to repopulate the birds. The new birds are predominantly brown feathered. What mechanism is in work here? What is the effect on the gene pool?
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Populations evolve for many reasons. Suppose there is a small population of birds that have either b...
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