Question

During the replication of a DNA molecule Multiple Choice new base pairs arise by the formation of covalent bonds between the bases. A will be paired with G, and T will be paired with C. the two strands in a parental molecule remain paired with each other. new base pairs must be formed according to Chargaff's rule.

Answer 1

During DNA replication, new base pairs are formed according to Chargaff's rule. The two strands of the parental DNA molecule remain paired with each other. Adenine pairs with thymine, and cytosine pairs with guanine.

Step-by-step explanation:

During DNA replication, new base pairs are formed according to Chargaff's rule, which states that A pairs with T, and G pairs with C. The two strands of the parental DNA molecule remain paired with each other.

The process of DNA replication involves the synthesis of a complementary strand for each strand in the parental molecule. For example, if the sequence of one strand is 5'-AATTGGCC-3', the complementary strand would have the sequence 3'-TTAACCGG-5'. This ensures that each new DNA double helix contains one parental DNA strand and one newly synthesized strand.

The formation of new base pairs is facilitated by hydrogen bonds. Adenine (A) and thymine (T) form two hydrogen bonds, while cytosine (C) and guanine (G) form three hydrogen bonds.

Answer 2

During DNA replication, new base pairs form according to Chargaff's rule, with adenine (A) pairing with thymine (T) and guanine (G) pairing with cytosine (C). This ensures that the genetic information is preserved and accurately passed on to the daughter cells.

Step-by-step explanation:

During the replication of a DNA molecule, new base pairs must be formed according to Chargaff's rule. This is a fundamental concept in molecular biology, stating that in DNA, the amount of adenine (A) is equal to thymine (T), and the amount of guanine (G) is equal to cytosine (C). Therefore, A will always pair with T, and G will pair with C, which is crucial for the integrity and function of the DNA molecule during and after replication.

The replication process begins with the separation of the two strands in the parental DNA molecule. Each separated strand acts as a template for the formation of a new complementary strand. The enzyme DNA Polymerase reads the template strand and facilitates the incorporation of new nucleotides into the growing strand based on complementary base pairing: A pairs with T, and G pairs with C. For example, if the sequence of one strand is 5'-AATTGGCC-3', the complementary strand created would be 3'-TTAACCGG-5'.