Cleavage Flashcards
1
Q
Cleavage
A
Mitotic divisions in which cells do not grow between divisions
Become smaller
2
Q
After about _____ divisions, the embryo, now called a ___________, consists of many small cells surrounding a fluid filled cavity (the _____________) above larger yolky cells
A
12
Blastula
Blastoceol
3
Q
Rates of cell division and distribution of blastomeres are under control of:
A
mRNAs and proteins stored in the oocyte (except mammals)
4
Q
Karyokinesis
A
Division of the nucleus
Positioning of mitotic spindle: always perpendicular to contractile ring
5
Q
Cytokinesis
A
Division of cell
Positioning of contractile ring determines the distribution of cytoplasm between the two daughter blastomeres
6
Q
Centrosome=
A
Centrioles and matrix
