membranes are formed. When cell division is complete, each new cell is ready to
undergo the same process.
Figure 2-3. Types of cell reproduction-mitosis.
c. Meiosis. Meiosis is similar to mitosis, but the chromosome pairs do not
separate as in figure 2-3. Instead, half of the chromosomes go to each centriole,
resulting in two new cells having half the number of chromosomes as the parent cell.
This type of cell division is found only in the sexual cells of the higher forms of life. The
cells formed by meiosis are known as gametes. When two gametes of opposite sexes
of the same species combine, they form a zygote, which contains the same number of
chromosomes as each parent cell and half of the hereditary characteristics of each.
d. Amitosis. Amitosis is a simple type of cell division in which the nucleus
undergoes cleavage, followed by that of the cytoplasm, without the formation of a