Stages of reproduction Flashcards
1
Q
What is fertilisation?
A
Fusion of the nucleus of a male gamete with the nucleus of a female gamete.
2
Q
A-what does fertilisation produce?
B-What does this product develop into?
A
A- a zygote
B- an embryo
3
Q
How many immature ova are females born with and where are they?
A
100’s within the ovaries.
4
Q
What happens to the eggs when females reach puberty?
A
they mature.
5
Q
What is ovulation?
A
It is when one ovum is released from an ovary every 28 days.
6
Q
How long does an ovum live for?
A
3-5 days UNLESS its fertilised
7
Q
explain the development of an embryo
A
sperm combine with ovum to form a fertilised egg.
Then the splitting of cells occurs which form a zygote which then develops into an embryo
8
Q
What is implantation?
A
It is when the zygote implants/imbeds itself into the endometrium.
