If two sister species on the phylogenetic tree above differ from the other two in a single character state (say dark or light fur), denote any possible evolutionary changes by placing an arrow—or arrows—on the tree below

Be sure to label the arrows as a loss or gain

What will be an ideal response?


ANS:
should show the single evolutionary event as in Figure 5.4 in the text

Biology & Microbiology

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The number of sperm cells that form from a primary spermatocyte is

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Which of the following is a type of essential nutrient?

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Some species of cuckoos lay their eggs in the nest of other birds, forcing the other bird to raise the young of the cuckoo. This would be a type of ________.

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Which of the following statements regarding the glycolysis pathway is FALSE?

A) Two pyruvate molecules are generated. B) Four ATP molecules are generated via substrate-level phosphorylation. C) Two NADH molecules are generated. D) One molecule of ATP is expended. E) Two molecules of water are generated.

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