AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mistakes during replication can result in
A
variation
B
mutation
C
evolution
D
All of the above
Explanation: 

Detailed explanation-1: -Replication errors can also lead to insertion and deletion mutations. Not all errors in replication are point mutations. Aberrant replication can also result in small numbers of extra nucleotides being inserted into the polynucleotide being synthesized, or some nucleotides in the template not being copied.

Detailed explanation-2: -When Replication Errors Become Mutations. Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division. This is because once such mistakes are established, the cell no longer recognizes them as errors.

Detailed explanation-3: -During the process of DNA replication, errors can sometimes occur. Nucleotide bases may be inserted, deleted, or mismatched into the DNA strand incorrectly. For this reason, it is important for the biological system to have mechanisms in place to detect and repair these errors.

Detailed explanation-4: -Mutations. When there is a mistake in the copying of the genetic message that is permanent, a mutation has occurred.

There is 1 question to complete.