Question

What is meant by semi conservative nature of DNA replication? Who proved it and how? What does Oparin-Haldane hypothesis about life suggest? Explain.

Answer 1

Answer:

Semi-conservative replication means that during DNA replication, the two strands of nucleotides separate. Both strands then form the template for free nucleotides to bind to to create the two identical daughter strands. Hence each daughter strand has half of the DNA from the original strand and half newly-formed DNA

Answer 2

Answer:

Meselson and Stahl in 1957 gave experimental evidences that each DNA strand served as a template for new synthesis, a process called semi conservative replication. ... The DNA that was extracted from the culture one generation after the transfer from 15N to 14N medium had a hybrid or intermediate density.

Explanation:

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