AP BIOLOGY

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LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In replication, ____ DNA strands are copied and in transcription ____ DNA strands are copied.
A
only one of the, both
B
both, only one of the
C
both, both
D
only one of the, only one of the
Explanation: 

Detailed explanation-1: -DNA is double-stranded, but only one strand serves as a template for transcription at any given time. This template strand is called the noncoding strand. The nontemplate strand is referred to as the coding strand because its sequence will be the same as that of the new RNA molecule.

Detailed explanation-2: -Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.

Detailed explanation-3: -(1)RNA molecules with different sequences will be produced and hence proteins with different sequences will be produced. (2)double stranded RNA molecules will be produced that would prevent translation of dsRNA.

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