LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Unwinding of the double helix by helicase during DNA replication
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Separation of sister chromatids to opposite poles during mitosis
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Transcription into complementary RNA for protein synthesis
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Complementary base pair matching during DNA replication
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Conservation of DNA by the enzyme sequenceconservertase
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Detailed explanation-1: -This means that each of the two strands in double-stranded DNA acts as a template to produce two new strands. Replication relies on complementary base pairing, that is the principle explained by Chargaff’s rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).
Detailed explanation-2: -During replication, the two strands separate, and the base sequence of each strand dictates the construction of a new, complementary strand. In this way, the sequence of the double strands is preserved in the two new identical double strands produced.
Detailed explanation-3: -What is the complementary base pairing rule for DNA? Complementary base pairs refer to the nitrogenous bases adenine, thymine, cytosine, and guanine. in a double strand of DNA, adenine will always pair with its complement thymine and cytosine will always pair with its complement guanine.
Detailed explanation-4: -During DNA (Deoxyribonucleic acid) replication, two molecules of DNA are synthesized. Complementary base-pairing ensures that the two DNA molecules synthesized are identical to the parental DNA molecule.
Detailed explanation-5: -Answer and Explanation: Complementary base pairing is crucial to the process of DNA replication which follows a semi-conservative model. During DNA replication the DNA double strands are separated by an enzyme so that the replication machinery can begin to work.