fertilization --> zygote --> embryo
1. Process -
(Gametes are sex cells. The male gametes are the sperm, and the female gametes are the eggs.)
adult male 46 (diploid cell) --> (meiosis) --> half chromosome (number) set (Hoploid) --> Gametes 23
adult female 46 (diploid cell) --> (meiosis) --> half chromosome (number) set (Hoploid) --> Gametes 23
The cells that are formed by meiosis have half as many chromosomes as the cell that formed them.
2. Fertilization occurs and the joining (fusion) of a male gamete and a female gamete. The new cell that is formed divides over and over again by meiosis. This creates the many cells that eventually form a new individual. Involves a half set of chromosomes (hoploid) + a half set of chromosomes (hoploid) = a diploid cell = Zygote
Stages of meiosis
3. Fertilization complete --> new cell (combo of the male+female chromosomes) --> process of cell division (Mitosis) --> both contain 46 chromosomes --> each of these divide (still containing 46 chromosomes) --> embryo.