LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do we call DNA replication since new DNA has 1 parent strand and 1 new strand?
A
Conservative
B
Semiconservative
C
Dispersive
D
None of the above
Explanation: 

Detailed explanation-1: -Each new double strand consists of one parental strand and one new daughter strand. This is known as semiconservative replication.

Detailed explanation-2: -Semi-conservative mode of replication produces two copies, each containing one original strand and one new strand. On the contrary, conservative replication produces two new strands and would leave two original template DNA strands in a double helix.

Detailed explanation-3: -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-4: -DNA replication is ‘semi-discontinuous’ because one of the strands is synthesized continuously, while the other strand, is discontinuously by the formation of Okazaki fragments. This was discovered in the year 1968 by a Japanese scientist couple-Reiji Okazaki and his wife Tsuneko Okazaki.

There is 1 question to complete.