A Barr body is a(n) ____
a. activated X chromosome
b. inactivated X chromosome
c. immature trophoblast
d. immature blastocyst
e. mature blastocyst
b
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Snuppy, a male Afghan hound, was created by transferring the nucleus from an ear cell of the male Afghan, Tai, into an enucleated egg from a donor. The embryo was transplanted into a surrogate mother to develop to term
Which of the following animals would be a genetic match for Snuppy if nuclear DNA were tested and if Snuppy were not a clone, but the product of in vitro fertilization? A) Tai B) the egg donor C) the surrogate D) both Tai and the egg donor E) both Tai and the surrogate
Besides oil, what other chemical should be detected in substantial amounts upon chemical analysis of these small spheres?
A) sporopollenins B) phenolics C) waxes D) terpenes
endothermy costs
What will be an ideal response?
Ascaris lumbricoides
A. spreads to humans by ingestion of Ascaris eggs in food. B. is an intestinal roundworm. C. larvae migrate to the pharynx, get swallowed, and return to intestines to mature. D. larvae penetrate into lymphatics and capillaries around intestines. E. All of the choices are correct.