Answer:
<em>In a population, natural selection acts on phenotype of individuals.</em>
Explanation:
Natural selection tends to favour those organisms of a population which carry traits that allow them to be better adapted to the environment and these traits are passed on to their offsprings. Natural selection tends to act on the phenotype of the population whereas evolution is the phenomenon which changes the allele frequencies. Natural selection acts on individual organisms of a population whereas the change in populations, on the whole, arises due to evolution.
An atomic nucleus contains most of the atom’s mass.
Answer:
Flaccid paralysis.
Explanation:
Demyelinating disease may be defined as in which the protective layer of myelin sheath gets damaged. This causes the slow down or even stops the transfer of nerve impulse.
Flaccid paralysis is the neurologic condition that results in the reduced muscle tone due to damage in the nerves of the muscles. The contraction is inhibited in the flaccid paralysis. The demylination results in no contraction at all as occur in flaccid paralysis.
Thus, the answer is flaccid paralysis.
