Question

What is the purpose of complementary base pairing in DNA?

1) To link together pieces of DNA
2) To determine the sequence of DNA
3) To repair damaged DNA
4) To regulate gene expression

Answer 1

Complementary base pairing in DNA ensures the maintenance of its double helix structure and precise replication, preserving the genetic sequence through generations.

Step-by-step explanation:

The purpose of complementary base pairing in DNA is to maintain the double helix structure of DNA and ensure accurate replication.

Each base on one strand of DNA pairs with a specific complementary base on the opposing strand, following the base complementary rule: adenine (A) with thymine (T), and guanine (G) with cytosine (C). This allows for the correct sequence of DNA to be preserved during replication, which is crucial for the transmission of genetic information from one cell generation to the next.