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  4. Assertion: The mechanism of DNA replication is semi conservative in nature. Reason: Each of the complementary strands of the parental double helix is conserved during the process.

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Q. Assertion : The mechanism of $DNA$ replication is semi conservative in nature.
Reason : Each of the complementary strands of the parental double helix is conserved during the process.

Molecular Basis of Inheritance

Solution:

$DNA$ replication is semi-conservative, a type of replication in which one strand of the daughter duplex is derived from the parent while the other strand is formed new. This is carried out by the separation of two strands. The separated strands function as templates. The new strands built up over the templates of old strands will have complementary base pairs ($A$ opposite $T$ and $G$ opposite $C$). The two daughter DNA molecules thus formed will be carbon copies of the parent molecule but shall have one new strand and one old strand.