Reproduction Flashcards
1
Q
Asexual reproduction
A
There is only one parents involved
New offspring is usually made by mitosis (cell division)
The offspring are clones of the parent
Reproduction without fertilisation
No genetic variation
2
Q
Sexual reproduction
A
Fertilisation (fusion) of two haploid gametes
Animal gametes:
female sex cell (egg)
male sex cell (sperm).
Plants gametes:
female sex cell (egg)
male sex cell (pollen)
3
Q
Diploid
A
Two sets of chromosomes - 46
Fertilised gametes (zygotes) are diploid
3
Q
Haploid
A
One set of chromosomes - 23
In humans, only gametes are haploid
4
Q
Zygote
A
Once fertilisation has taken place a single cell (unicellular) is made called a zygote
5
Q
Fertilisation
A
Fusion of two haploid gametes
6
Q
Embryo
A
A ball of cells formed after mitosis has occurred
(multicellular)
