2006-08-31 12:23:51 · 6 answers · asked by louise c 1 in Science & Mathematics ➔ Biology
the first activity triggered by the sperm is Calcium-flux waving ongoing at the entry-point all around the egg. this has 2 consequences,
1- that several maternal proteins are moved to different centers helping to polarise the egg in two poles (animal and veggetativ)
2- other proteins are changing its' position radial to the eggs-center and so stopping any further sperm entry
2006-08-31 12:46:21 · answer #1 · answered by sokrates_derweise 1 · 1⤊ 0⤋
Um...Egg activation?
Not sure I understand your question.
Once the sperm enters the egg, the two become one cell, called a zygote. This then begins splitting, therefore doubling the number of total cells with each split.
2006-08-31 12:33:09 · answer #2 · answered by abfabmom1 7 · 0⤊ 0⤋
I think the sperm has to penetrate the outer portion of the egg.
2006-08-31 12:30:43 · answer #3 · answered by Anonymous · 0⤊ 0⤋
wen the sperm is in, the sperm realeses all its contents,
ex.
key s=sperm e=egg b=baby
ok, if s+e=b...
u can hav _+e=b
an egg cant go by itself, so, the sperm ferilizes it, giving the egg 23 chromosomes....
2006-08-31 12:28:56 · answer #4 · answered by Ix.XI 3 · 0⤊ 0⤋
You have to stand on your head for1 hour to activate the sperm!
2006-08-31 12:33:57 · answer #5 · answered by Msquared 2 · 0⤊ 0⤋
sardine juice
2006-08-31 12:28:42 · answer #6 · answered by Jenny A 6 · 0⤊ 0⤋