1.1 Cycle Of Life Flashcards
(6 cards)
Six fundamental processes of embryogenesis
1) Fertilization
2) cleavage
3) gastrulation
4) organogenesis
5) metamorphosis
6) gametogenesis
Embryogenesis
The stages of life between fertilization and birth/hatching.
Cleavage terms
1) Blastomeres - The smaller cells formed from the rapid mitotic division of cleavage.
2) Blastula - The sphere of cells formed by the Blastomeres by the end of cleavage.
Cleavage
A series of rapid mitotic divisions immediately following fertilization. Each of those smaller cells is called a Blastomeres. By the end of cleavage, the Blastomeres have formed a sphere called the blastula.
Fertilization
The fusion of each mature egg cell with each mature sperm cell.
Fertilization terms
1) Zygote - the fertilized egg (I.e, fused with the mature sperm).