What would happen if meiosis did not occur in sexually reproducing organisms?
a. The growth of the zygote would be halted.
b. Mitosis would be sufficient to produce haploid gametes.
c. The gametes would remain haploid.
d. The chromosome number would double in each generation.
e. The eggs would be haploid, but the sperm would be diploid.
d
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Extinction rates on islands are predicted, based on island biogeography, to be lowest
A. on small islands. B. on large islands. C. near islands. D. far islands. E. on large islands and far islands.
While socializing with friends one night, you all decide to list the important traits you prefer in a mate. What evolutionary pressure is at work here?
a. gene flow b. genetic drift c. nonrandom mating d. environmental variance
Four of the five items listed below are cytoplasmic
organelles. Select the exception. a. nucleolus b. mitochondrion c. ribosome d. Golgi body e. chloroplast
You have just read an advertisement for a new drug that claims people who take it can get muscular bodies without spending months lifting weights in the gym. The drug stimulates muscle growth in the same way that weight lifting does, which is to
A. turn surrounding connective tissue into muscle tissue. B. stimulate an increase in the proportion of slow-twitch muscle fibers. C. stimulate existing muscle fibers to fuse with one another. D. stimulate growth in the size of existing muscle fibers. E. stimulate existing muscle fibers to divide.