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You have discovered that a single co-dominant gene controls the date when monarch butterflies break diapause (=become reproductively active) in Mexico.  You were extremely busy this spring, and extensively sampled one overwintering site to find that 1600 monarchs broke diapause in early February, 400 broke diapause in late February, and […]

Q. Eastern tent caterpillars live in sizable groups in silk nests, or tents, which they construct in cherry trees. They are among the first insects to become active in the spring, emerging very early in the season-a time while daily temperature fluctuates from freezing to very hot. Observing a colony […]

Calculate the molarity of 500 ml of a solution containing 100 grams of glucose (C6H12O6). Calculate the weight percent of 100 grams of glucose dissolved in 400 grams of water. How many moles are in 100 grams of glucose (C6H12O6)? James used pH paper to measure the pH of various […]

Consider the example of epistasis in the coat color of Laborador Retrievers. Recall that the double recessive homozygote animals are yellow with liver noses and eyes, instead of yellow with black noses and eyes; many breeders consider these liver-nosed animals unacceptable. Please describe which crosses should not be performed to […]