Metabolic cell division.. Exchange or transit of genes between each opposite chromatidine. A nuclear and nuclear membrane in each pole and separation into two cells with half the number of chromosomes

The meiosis is divided into two parts:
- The first division: It passes through four stages:
Phase I:
1. Chromosomes are characterized by shortening and amplification.
2. Each chromosome chromosome, called the pair of chromosomes in the quadrilateral (4 chromatids), is mixed in similar pairs.
3. Gene exchange or transit occurs between each opposite chromatidine in the quaternary (transit phenomenon).
4. The nuclear membrane disappears and the nucleus, and every chromosome in the quartet begins to move away from each other.
First tropical phase:
Binary chromosomes on the equator are linked to the spindle threads.
 The first separatist phase:
The spindle leads shrink, leading to half the chromosomes going to the pole and the other half to the other pole of the cell.
Final Phase I:
Each pole consists of a nuclear and nucleic membrane and then splits into two cells with half the chromosomes.
Second division: After the two cells in the meiosis, the two cells divide indirectly to give four cells with the same number of chromosomes, and these resulting cells are called gametes.
Chapter II: Non-sexual reproduction in living creatures.