All of them!
During the process known as meiosis, cytokinesis occurs twice. Meiosis is cell division and is associated with sexual reproduction.
1stage
All of the steps involve physical processes. So all of them!
Meiosis.
During the formation of gametes - a process called gametogenesis - meiosis is a process which only occurs during this period. Meiosis is a special type of cell division necessary for sexual reproduction.
nondijunction
crossing over occurs in meiosis I, specifically during prophase
Meiosis
Chromosomes exchange genetic information during a process called crossing over. This occurs during meiosis
meiosis
Meiosis generates variations due to activities like independent assortment of chromosomes, crossing over and random fertilization that occur during the process. Meiosis occurs during sexual reproduction.
The purpose of synapsis in meiosis is to increase genetic variability. During synapsis is when tetrads form.