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Botany-DNA Replication

NEET Botany DNA Replication MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Which combination of statements about DNA and its functions is correct?

A

Adenine and thymine are complementary bases; RNA polymerase is involved in DNA replication.

B

Cytosine pairs with guanine in DNA; lactose acts as an inducer in the lac operon.

C

DNA fingerprints can identify individuals; beta-galactosidase is produced continuously.

D

RNA is transcribed from the coding strand; DNA replication is a conservative process.

Correct Answer

Option B

Detailed Explanation

Cytosine pairs with guanine in DNA, and lactose indeed acts as an inducer for the lac operon, allowing for gene expression when glucose is absent. Other options contain inaccuracies regarding the processes described.

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