THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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breaks hydrogen bonds and exposes bases
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holds DNA strands apart and attracts bases
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zips and unzips the double-stranded DNA
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binds nucleotides and corrects base pair errors
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Detailed explanation-1: -The main function of DNA polymerase is to synthesize DNA from deoxyribonucleotides, the building blocks of DNA. The DNA copies are created by the pairing of nucleotides to bases present on each strand of the original DNA molecule.
Detailed explanation-2: -The primary role of DNA polymerases is to accurately and efficiently replicate the genome in order to ensure the maintenance of the genetic information and its faithful transmission through generations.
Detailed explanation-3: -During proofreading, DNA polymerase enzymes recognize this and replace the incorrectly inserted nucleotide so that replication can continue. Proofreading fixes about 99% of these types of errors, but that’s still not good enough for normal cell functioning.
Detailed explanation-4: -In bacteria, all three DNA polymerases (I, II and III) have the ability to proofread, using 3’