If a human cell has two Barr bodies then the genotype of the individual could be

A. XXXY
B. XXXXY.
C. XXY.
D. XYY.


A

Biology & Microbiology

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a. nutrients. b. wastes. c. signaling molecules. d. various proteins. e. all of these.

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How does transcription of sporulation genes in B. subtilis involve different sigma factors?

What will be an ideal response?

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The human X chromosome

a. is found in females. b. is found in males. c. carries different genes than the Y chromosome. d. interacts with a Y chromosome as homologues during meiosis. e. fits all of these descriptions.

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Who developed the process of the polymerase chain reaction?

A. Watson and Crick B. McClintock C. Mullis D. Pauling

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