They need to replicate themselves to make sure they don't get smaller.
Answer: Different genes being expressed.
Explanation:
The differences in the structure of the muscle and the nerve cells is due to the gene expression or gene expressed in the cell and the gene silenced to achieve the desired organisation of cells.
Answer:
Meiosis is a type of cell division in which gametes are formed and number of chromosome is reduce i. e. from double to half.
Explanation:
Meiosis cell division only occurs in sex cells of male and female. In meiosis, the parent cell that is diploid i. e. double number of chromosomes, is divided into four daughter cells having half number of chromosome each i. e. haploid or monoploid. These cells are responsible for the variation that occurs in the living organisms.