AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why is DNA replication considered to be semi-conservative?
A
the parental strands are conserved in one of the new DNA molecules
B
each new strand contains a parental strand and a new daughter strand
C
nucleotides are conserved on the leading strand
D
nucleotides are conserved on the lagging strand
Explanation: 

Detailed explanation-1: -Semiconservative replication is so named because one of the strands of DNA in each of the two copies of DNA is ancient and conserved while the other is newly produced at the moment of replication.

Detailed explanation-2: -This process is said to be ‘semiconservative’ because one strand from each parent is conserved and remains intact after replication has taken place.

Detailed explanation-3: -The replication of one helix results in two daughter helices each of which contains one of the original parental helical strands. It is semi-conservative because half of each parent helix is conserved in each daughter helix.

Detailed explanation-4: -One of the most important concepts of DNA replication is that it is a semi-conservative process (Figure 7.2. 7). This means that every double helix in the new generation of an organism consists of one complete “old” strand and one complete “new” strand wrapped around each other.

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