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A Drosophila researcher has recently isolated a number of mutant fruit flies. The phenotype of each mutant is described below (i–iv). For each mutant, describe the type of gene (maternal-effect gene, gap gene, segment-polarity gene, or homeotic gene) that was most likely the cause of the altered phenotype. Briefly explain […]

Question: If I become a Devil’s advocate and quote an example of a water animal becoming a land animal that gets back to water to become a whale, and that DNA or RNA could have been that water animal that was switching to each other. Can you still justify what came […]

Wild turkeys are dramatically sexually dimorphic; domesticated turkeys are less so. Suppose that wild female turkeys chose mates on the basis of expensive traits that indicate disease resistance and that artificial selection for rapid weight gain in domestic turkeys destroyed female choice. Briefly describe the mechanism of selection in wild […]

Chase and Christina were studying for their last anatomy and physiology exam of the semester. After reviewing his notes on meiosis, Chase said, “Well, since meiosis is the same in males and females, I don’t need to study the meiosis notes from the female reproductive system lecture.” Christina quickly pointed […]