________ evolution starts with related species that have similar traits but, over time, the species undergo changes that cause them to have different traits.
a) divergent
b) directional
c) convergent
d) stabilizing
Answer: a) divergent
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When a population is greatly reduced in size and then increases again, there is likely a reduction in genetic diversity within the population. What is this phenomenon called?
a. gene flow b. bottleneck effect c. founder effect d. genetic drift e. effective population size
As males and females age they produce lower volumes of sex hormones. For women, taking testosterone to increase
libido in becoming more common. Why is the same not common for males? What will be an ideal response?
The signal/messenger responsible for opening the gated channel in Figure 42-4 is:
a. ATP.
b. ADP.
c. cAMP.
d. K+.
e. Na+.
Glycolysis and the citric acid cycle comprise two different sets of oxidation reactions. The reaction sequence for glycolysis is linear, whereas the reaction sequence for the citirc acid cycle forms a circle
How does this difference in the arrangement of reactions influence the rate of these processes when an excess amount of a single intermediate is added?