One of the major differences between meiosis and mitosis is that in meiosis ____
a. there are two consecutive divisions
b. DNA is not replicated
c. diploid cells are formed
d. cells with 46 chromosomes are formed in humans
e. all body cells are formed
ANSWER: a
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Antibiotics that affect various strains of Gram-positive bacteria and various strains of Gram-negative bacteria are called
A. isolate usable. B. stress-induced. C. narrow-spectrum. D. broad-spectrum.
The results of the experiment outlined in the accompanying figure clearly demonstrate:a
gene amplification.
b. founder cell development pattern.
c. mosaic development.
d. apoptosis.
e. totipotency.
Most viruses:
a. Infect only a few closely related species b. Only infect animal cells c. Infect a wide variety of organisms d. Cannot infect living cells e. Only infect plant cells
During the spring, you are studying the mice that live in a field near your home. There are lots of mice in this field, but you realize that you rarely observe any reproductive females. This most likely indicates
A) that there is selective predation on female mice. B) that female mice die before reproducing. C) that this habitat is a good place for mice to reproduce. D) that you are observing immigrant mice. E) that the breeding season is over