Sister chromatids connect at a region of DNA called the centrosome
a. True
b. False
ANSWER: False
Biology & Microbiology
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A. is a useful nutrient source for most bacteria. B. is a hydrolysate of proteins. C. stays liquid through the typical range of incubation temperatures. D. has chemical and physical properties that make it almost ideal for solidifying media.
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Which of the following is a homeotic gene that
controls heart development?
a. Dunce b. groucho c. Tinman d. toll e. Pacman
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Most of the earth's usable carbon is in its
a. sedimentary rocks. b. atmosphere. c. biomass. d. oceans. e. mantle
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Spermatogenesis is governed by _____.
A. GnRH B. luteinizing hormone only C. luteinizing hormone and follicle-stimulating hormone D. Follicle-stimulating hormone only E. GnRH, luteinizing hormone, and Sertoli cells
Biology & Microbiology