AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a semi-conservative model of DNA replication, which of the following is true?
A
The daughter DNA molecule consists of 2 newly formed strands
B
The daughter DNA molecule consists of 2 parent strands
C
The daughter DNA molecule consists of 1 parent strand and 1 new strand
D
The daughter DNA molecule consists of an uneven mix of old and new strands
Explanation: 

Detailed explanation-1: -DNA replicates by a semi-conservative method in which each of the two parental DNA strands act as a template for new DNA to be synthesized. After replication, each DNA has one parental or “old” strand, and one daughter or “new” strand.

Detailed explanation-2: -Semi-conservative replication. In this model, the two strands of DNA unwind from each other, and each acts as a template for synthesis of a new, complementary strand. This results in two DNA molecules with one original strand and one new strand.

Detailed explanation-3: -DNA replication is a semi conservative process wherein each daughter cell have one original strand and one newly synthesized strand.

Detailed explanation-4: -The semi-conservative method of replication suggests that the two parental DNA strands serve as a template for new DNA and after replication, each double-stranded DNA contains one strand from the parental DNA and one new (daughter) strand.

There is 1 question to complete.