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Use the figure to answer the following question.The segment of DNA shown in the figure has restriction sites I and II, which create restriction fragments A, B, and C. Which of the gels produced by electrophoresis best represents the separation and identity of these fragments?

In animals, what is the difference between reproductive cloning and therapeutic cloning?

Many identical copies of genes cloned in bacteria are produced as a result of which of the following processes?

Which of the following statements correctly describes one of the main differences between embryonic stem cells and adult stem cells?

Refer to the life cycles illustrated in the figure below to answer the following question(s).Which of the life cycles is typical for animals?

Darwin and Wallace were the first to propose _____.

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.Which conclusion can be drawn from this evolutionary tree?

The following experiment is used for the corresponding question(s).A researcher discovered a species of moth that lays its eggs on oak trees. Eggs are laid at two distinct times of the year: early in spring when the oak trees are flowering and in midsummer when flowering is past. Caterpillars from eggs that hatch in spring feed on oak flowers and look like oak flowers. But caterpillars that hatch in summer feed on oak leaves and look like oak twigs.How does the same population of moths produce such different-looking caterpillars on the same trees? To answer this question, the biologist caught many female moths from the same population and collected their eggs. He put at least one egg from each female into eight identical cups. The eggs hatched, and at least two larvae from each female were maintained in one of the four temperature and light conditions listed below.In each of the four environments, one of the caterpillars was fed oak flowers, the other oak leaves. Thus, there were a total of eight treatment groups (4 environments × 2 diets).Refer to the accompanying figure. Which one of the following is NOT a plausible hypothesis to explain the differences in caterpillar appearance observed in this population?

In a very large population, a quantitative trait has the following distribution pattern.If there is no gene flow, the curve shifts to the left or to the right, and the population size consequently increases over successive generations, which of the following is most likely occurring?

Peyton’s great-aunt was involuntarily sterilized in 1930 because of her supposed lower intelligence. Peyton’s great-aunt was a victim of _______, which was a movement that discouraged reproduction of people with “bad genes” in order to _____________.