B2 5.2: Cell division in sexual reproduction.

All information was taken directly from the AQA revision guide with only the key points from B2 5.2.

HideShow resource information
What are the cells in reproductive organs?
Testes and ovaries
1 of 10
What does meiosis produce?
Sex cells or Gametes
2 of 10
What are the gametes in humans?
Sperm and ova.
3 of 10
What does each gamete have?
One chromosome from each original pair and all cells are different from each other and their parent cell.
4 of 10
What does sexual reproduction result in?
Greater variation as gametes from each parent fuse. This means thathalf the genetic info comes from the mother the other half from the father.
5 of 10
What happens when gametes join at fertilisation?
A single body cell with new pairs of chromosomes is formed.
6 of 10
How does a new individual then develop?
By these cells repeatably dividing by mitosis.
7 of 10
What happens before division?
A copy of each chromosome is made.
8 of 10
How many times does the cell divide?
Twice to form 4 gametes.
9 of 10
What does each gamete have?
A single set of chromosomes each with a different combination of genes.
10 of 10

Other cards in this set

Card 2

Front

What does meiosis produce?

Back

Sex cells or Gametes

Card 3

Front

What are the gametes in humans?

Back

Preview of the front of card 3

Card 4

Front

What does each gamete have?

Back

Preview of the front of card 4

Card 5

Front

What does sexual reproduction result in?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all DNA and inheritance resources »