Key terms Flashcards
1
Q
gamete
A
a reproductive cell (sperm or egg)
2
Q
fertilisation
A
the fusion of the nucleus of a male gamete with the nucleus of a female gamete
3
Q
internal fertilisation
A
when the male transfers the sperm to the inside of the female egg
4
Q
external fertilisation
A
when the fusion happens outside the female’s body
5
Q
asexual reproduction
A
reproduction where the offspring is the exact clone of the parent and doesn’t need a mate
6
Q
sexual reproduction
A
two individuals who produce gamete needs fertilisation M+F
7
Q
zygote
A
a fertilised egg
8
Q
embryo
A
what an egg is called from 2-8 weeks after fertilisation
9
Q
fetus
A
what an embryo is called from 9 weeks until birth
10
Q
non-identical (fraternal) twins
A
2 eggs 1 sperm
11
Q
identical (monozygotic) twins
A
2 eggs 2 sperms
