M.Sc. Bio-Chemistry (PU-CET P.G) 2017 Panjab University Entrance Exam With Answers

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61.

Dideoxynucleoside triphosphates (ddNTPs) are used in sequencing DNA because:

A: ddNTPs are fluorescent.
B: ddNTPs are incorporated very efficiently into DNA by DNA polymerase.
C: ddNTPs cannot be incorporated into DNA by DNA polymerase.
D: ddNTPs prevent further DNA synthesis once they are incorporated into the DNA sequence.

The answer is: D

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