In humans, individuals with trisomy of the ________ chromosome are most likely to survive until adulthood.

A. 13th.
B. 18th.
C. 21st.
D. 3rd.
E. 15th.


Answer: C

Biology & Microbiology

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Examine the phylogenetic tree depicted in Figure 26.17 as you address the following questions. The Crenarcheota, Korarchaeota, and Thaumarchaeota are three divisions within the Archaea that share a common ancestor

A. true B. false

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The division of cytoplasm is accomplished during

a. prokaryotic fission. b. interphase. c. meiosis. d. cytokinesis. e. karyokinesis.

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The _____ model proposed by Jacob and Monod explains gene regulation in prokaryotes.

a. endosymbiotic b. fluid mosaic c. cohesion-tension d. operon

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Gout is a condition in which:

A) calcium deposits affect the joints. B) uric acid accumulates in the blood. C) the kidneys fail to excrete sodium. D) synovial fluid is progressively destroyed.

Biology & Microbiology