development in animals and cloning Flashcards
1
Q
zona pellucila
A
the extracellular layer that surrounds the egg and the sperm have special enzymes on their heads to break it down.
2
Q
vetellin layer
A
the layer that prevents other sperm from fusing with the egg.
3
Q
what’s a blastocyst?
A
the early 16 cell ball that forms after fertilisation
4
Q
what is totipotence?
A
when cells can become any type of cell.
5
Q
what is pluriprotence?
A
cells that can turn into any other type of cells excluding placental.
6
Q
what is multipotence?
A
when cells can form many different cells of the same type.
