It's upset its not happy.
Can you type the question or take a better picture i can’t really see it
Answer:
The correct answer is - A and D.
Explanation:
Genetic imprinting is DNA modifications that result in changing the expression but not the sequence. Factors That affect such changes present both within and outside the cell.
It is a result of the silencing of either maternal or paternal alleles in a pair. This occurs random and leads to phenomenon like X-inactivation. The mechanism involves methylation of the DNA to be silenced. paternal copy of UBE3A is silenced in neurons.
The situations that would be least likely for a scientist to revise her experimental methods are:
- if her results support her hypothesis and
- if results are the same after repeating the procedure
<h3>What is an experiment?</h3>
An experiment is a systematic and scientific procedures that is carried out to measure and test a hypothesis in order to arrive to a conclusion.
There will be no need to repeat an experimental procedures or methods if the results obtained supports the hypothesis and if the results are the same after repeating the procedure.
Learn more about hypothesis here:
#SPJ1
