A centromere is least likely to ____

a. divide in anaphase of mitosis
b. connect sister chromatids
c. attach chromosomes to spindle fibers
d. cross over during prophase I of meiosis
e. be a component of DNA


d

Biology & Microbiology

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Inbreeding reduces which of the following variances to near zero?

A. Genetic variance B. Environmental variance C. Both variances D. Neither variance

Biology & Microbiology

Genomic analyses of the apple- and hawthorn-feeding races of Rhagoletis suggest that genetic divergence between the

two species has largely been driven by ____ selection, a diversifying form of natural selection.

a. disruptive b. directional c. stabilizing

d. artificial e. sexual

Biology & Microbiology

An advantage of sexual reproduction is to ____ among offspring. 

A. produce new gene combinations B. reduce genetic diversity C. introduce new genes into a species D. None of the choices is correct.

Biology & Microbiology

How is caspase-activated DNase (CAD) activated?

a) A caspase binds to CAD allosterically, activating it. b) A caspase cleaves an activator of CAD, turning it on and causing it to activate CAD. c) A caspase cleaves CAD, activating it. d) A caspase cleaves a CAD inhibitor, relieving the CAD of inhibition. e) None of the choices is correct.

Biology & Microbiology