Approximately how many genes do humans

have?



a. 10,000
b. 20,000
c. 50,000
d. 100,000
e. 1,000,000


C

Biology & Microbiology

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The major advantage provided to plants by root hairs is:

A) underground asexual reproduction. B) needle-like points for drilling through hard or rocky soil. C) ability to produce new taproots. D) greatly increasing absorptive surface area.

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Reverse transcriptase copies

A. DNA to DNA. B. DNA to RNA. C. RNA to DNA D. RNA to RNA.

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