Answer:
Option (B).
Explanation:
Neurons or nerve cell are the basic structural and functional unit of the nervous system. Fibers are the thread like long projection of the nerve cells.
Neurons are classified into three fibers- Group A fibers, B fibers and C fibers. The group C fibers cannot capable of doing the saltatory conduction of the nerve impulse because they are unmyelinated.
Thus, the correct answer is option (B).
1.Hirsutism
2. Seven
3. SeaHorses
As per the rules of bionomial nomenclature, the species name that is written correctly is C. Pelecinus polytyrator (or B, because you wrote two answers which are completely the same).
You capitalize the genus name, but write the specific epithet in small letters.
Genes are responsible for every cellular differences in a way that it is active on the same type of cell and inactive in another type of cell. The reason for genes to be active in a specific cell is because of enzymes or protein that turn it on.