$\text {Genes and RNA transcripts differ in length.}$
Figure 17.2
-Refer to Figure 17.2. The mRNA is smaller than the length of the DNA that codes for it because
A) post- transcriptional modification removes the exons.
B) the regulatory regions introns) of the gene are not transcribed.
C) post- transcriptional modification removes the introns.
D) bases are added to the tail of the primary transcript.

Question

$\text {Genes and RNA transcripts differ in length.}$
  Figure 17.2
-Refer to Figure 17.2. The mRNA is smaller than the length of the DNA that codes for it because
A) post- transcriptional modification removes the exons. 
B) the regulatory regions introns) of the gene are not transcribed. 
C) post- transcriptional modification removes the introns. 
D) bases are added to the tail of the primary transcript.

Quizplus · Accepted Answer

Post-transcriptional modification removes the introns, leaving only the exons that code for the mRNA. This reduces the length of the mRNA compared to the DNA that codes for it.

Genes and RNA transcripts differ in length.\text {Genes and RNA transcripts differ in length.}Genes and RNA transcripts differ in length. Figure 172 -Refer to Figure 17

$\text {Genes and RNA transcripts differ in length.}$ Figure 172
-Refer to Figure 17