4.6.1.1 Sexual and Asexual Reproduction Flashcards
1
Q
What is meiosis?
A
- formation of four non-identical cells from one cell
2
Q
What is mitosis?
A
- formation of two identical cells from one cell
3
Q
What does sexual reproduction involve?
A
- joining of male and female gametes
- each contain genetic information from the mother or father
4
Q
What are examples of gametes in animals?
A
- sperm cells
- egg cells
5
Q
What are examples of gametes in flowering plants?
A
- pollen
- egg cells
6
Q
How are gametes formed?
A
- meiosis as they’re non-identical
7
Q
How many chromosomes does a normal cell have?
A
- 46
- 23 pairs
- one set (23) from mother, the other from father
8
Q
What happens to the chromosomes in gametes?
A
- fuse in fertilisation
- genetic information is mixed, producing variation in offspring
9
Q
What does asexual reproduction involve?
A
- one parent with no gametes joining
10
Q
How does asexual reproduction occur?
A
- process of mitosis
- two identical cells are formed from one cell
11
Q
What does asexual reproduction lead to?
A
- no mixing of genetic information
- clones which are genetically identical
12
Q
What are examples of organisms that reproduce asexually?
A
- bacteria
- some plants
- some animals
