In addition to the shift to bipedalism, what major trend or trends do we see in hominin evolution as we look across our entire fossil record? Select all that apply
A. increase in body size
B. increase in brain size
C. significant increase in the difference in size
between males and females
D. increase in tooth size
E. None of the above.
A,B
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Sperm cells mature and are stored within human males in the _____
A) urethra B) prostate C) epididymis D) seminal vesicles E) bulbourethral gland
Prokaryotic DNA is found in which part of the cell?
a. The nucleoid b. The nucleus c. The ribosomes d. The cell membrane
Evidence shows that some grasses benefit from being grazed (eaten by herbivores). Which of the following terms would best describe this plant-herbivore interaction?
A) parasitism B) competition C) predation D) commensalism E) mutualism
A population of mountain goats are split because of the formation of a glacier. After 500 years the glacier melts and the two goat populations are free to move between the two areas. Under what conditions might a hybrid zone occur?
A. Post-zygotic isolating mechanisms have arisen. B. Pre-zygotic isolating mechanisms have arisen. C. Gene flow between the two populations does not occur. D. Both pre- and post-zygotic isolating mechanisms have arisen. E. Reproductive isolation is incomplete.