I believe it is the D, nucleus.
Answer:
b.c d are the answer options
Explanation:
b. The recessive allele could be a mutation in the promoter region that prevents RNA polymerase II from binding.
c. The recessive allele could be a mutation in the transcribed region that makes the mRNA unstable and causes it to degrade.
d. The recessive allele could be a mutation in regulatory DNA that prevents chromatin from being remodeled from a closed to an open state.
<u>in option b, the synthesis of </u><u>mRNA </u><u> is going to be halted</u>
<u>in </u><u>opt</u><u>ion</u><u> </u><u>c,</u><u> </u><u>mRNA </u><u>is </u><u>under</u><u>going</u><u> </u><u>degradat</u><u>ion</u><u>, it will be invisible in the northern blot.</u>
<u>in </u><u>opti</u><u>on</u><u> </u><u>d, </u><u>mRNA </u><u> in expression of each gene is going to be </u><u>turned</u><u> off.</u>
<u>.</u>
