Which statement is not a good explanation for the relatively low genetic variability among modern human populations?
A. There is greater variability within populations than among them.
B. Human population size has increased drastically in a short period of time.
C. Ancestral human population sizes were very small.
D. Humans have a global geographic distribution.
E. The level of inbreeding within human populations has been high at times.
Answer: D. Humans have a global geographic distribution.
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The taste receptors located in the fruit fly, Drosophila melanogaster, are located in the _____
1.mouth
2.antennae
3.abdomen
4.feet
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