Answer:
C. a mutation in the genetic code.
Explanation:
A mutation refers to any change or alteration to the nucleotide sequence of a gene caused by mutagen or mistakes during replication. Depending on the manner of occurrence, mutation can be of different types. In this question, partial DNA sequence for normal hemoglobin is given as: G-G-A-C-T-T-C-T-T while the partial DNA sequence for sickle cell anaemia is given as: G-G-A-C-A-T-C-T-T.
From careful observation of the two two DNA sequences above, it can be realized that a SUBSTITUTION MUTATION from T to A has occurred in the sequence of sickle cell. Note that substitution mutation is the replacement of one base by another in a sequence.
Answer:
Answer is the muscle cells.
Explanation:
This is because they are responsible for all the movement occurring in the body. And ,it has been observed that, most energy are consumed or used through the movement of the muscles.
Also, the muscles require more energy because they have more mitochondria than other cells that require less energy.
So that they can adapt to the situations that surround them in their environments.<span />
Answer:
<em>C. Increased loss of soil nutrients</em>
Explanation:
