In DNA, adenine always pairs with _____________

a. thymine
b. guanine
c. cytosine


a

Biology & Microbiology

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A fragile site:a

is found only on the X chromosome. b. occurs in only one of the sister chromatids. c. is associated with cancerous cells. d. is usually not inherited. e. is the result of genomic imprinting.

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What are the protobionts produced by abiotically produced polypeptides?

a. polybionts b. prokaryotes c. microspheres d. peptidebionts e. stromatolites

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Weedy plants are considered to be K-strategists

Indicate whether the statement is true or false

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