Definitons Flashcards
1
Q
Define Cleavage
A
Cell division by mitosis
2
Q
Define a morula
A
A ball of approximately 64 cells
3
Q
What’s special about the cells in a morula?
A
They are totipotent
4
Q
Describe a balstocyst
A
A group of cells with an outer layer of cells called trophoblasts an inner cell mass and fluid filled spaces in between called the blastocoele
5
Q
Define hatching
A
Where the blastocysts hatches from the zone pellucida to make contact with the uterine wall
6
Q
Define capacitation
A
Where the glycoprotein layer is removed from the acrosomal cap of the sperm to allow acrosomal reactions to occur if it meets the egg
7
Q
What is a polar body and what is contained in it? (2mks)
A
Unwanted genetic material that is left over from the division process in meiosis
