just anserer no need for explaniation
The 5' cap of eukaryotic mRNA plays a role in all of these processes EXCEPT
appropriate splicing |
|
mRNA stability |
|
ribosome binding |
|
addition of the poly(A) tail |
DNA methylation results in
decreased gene expression due to the recruitment of histone deacetylases |
|
increased gene expression due to the recruitment of histone deacetylases |
|
decreased gene expression due to increased histone acetylation |
|
increased gene expression due to increased histone acetylation |
1. Answer: Option D
is correct
Explanation:
A 5'-cap (5-methylguanosine) is added to the 5'-end of the mRNA in
eukaryotes.
It provides protection to the mRNA from 5'-exonucleases.
It also helps in the recruitment of ribosomes to the mRNA for
translation.
It is also reported to help in intron excision during splicing.
2. Answer: Option A
is correct
Explanation:
DNA methylation is generally a repression mark.
Histone acetylation is generally an activation mark.
DNA methylation results in
decreased gene expression due to the recruitment of histone
deacetylases.
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