A nucleic acid probe is a(n)

A) virus that transfers DNA to a recipient cell.
B) piece of radioactively labeled DNA that is used to locate a specific gene.
C) enzyme that locates a specific restriction site on RNA.
D) plasmid that recognizes a specific DNA sequence.


Answer: B

Biology & Microbiology

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The differentiation of distinct cell types is a biological innovation that accompanied the evolution of complex multicellularity

A. true B. false

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The incorporation of DNA into the information transfer system was advantageous because DNA is a(n) catalytic

molecule. ______________ Indicate whether the statement is true or false.

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The resistance to reinfection with measles virus following recovery from measles infection is called __________.

A) artificial immunity B) natural selection C) passive immunity D) innate immunity E) active immunity

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Only mutations in __________ cells matter in terms of evolution because they can be inherited by the offspring.

Fill in the blank(s) with the appropriate word(s).

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