The number of chromosomes is reduced to half during
a. anaphase of mitosis and meiosis.
b. meiosis II.
c. meiosis I.
d. fertilization.
e. interphase.
Ans: c. meiosis I.
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An individual who avoids the pull of gravity is exhibiting
(a) negative phototaxis. (b) positive geotaxis. (c) negative geotaxis. (d) positive thigmotaxis.
Which duct in the male reproductive system will function in both reproduction and urination?
a. Ejaculatory b. Vas deferens c. Seminal vesicle d. Epididymis e. Urethra
In a diploid population, selection is likely to be stronger than drift when s (the selective advantage in this case) is:
a. > 1/2Ne. b. > Ne. c. > 2Ne. d. > 4Ne. e. > Ne/4.
What is the correct sequence of stages in the life cycle of the Chinese liver fluke?
A. adult; sporocyst; rediae; cercaria; metacercaria; egg with miracidium; adult. B. adult; egg with miracidium; cercaria; sporocyst; rediae; metacercaria; adult. C. adult; egg with miracidium; metacercaria; sporocyst; rediae; cercaria; adult. D. adult; egg with miracidium; sporocyst; rediae; metacercaria; cercaria; adult. E. adult; egg with miracidium; sporocyst; rediae; cercaria; metacercaria; adult.