Reproduction (AQA GCSE Biology Combined Science): Flashcards
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What is meiosis?
What is meiosis?
Formation of four non-identical cells from one cell
Where does meiosis occur?
Where does meiosis occur?
In reproductive organs
What are cells formed by meiosis called?
What are cells formed by meiosis called?
Gametes
How many chromosome copies in gametes?
How many chromosome copies in gametes?
One copy of each chromosome
Chromosomes after first meiosis division?
Chromosomes after first meiosis division?
46 per cell
Chromosomes in each gamete?
Chromosomes in each gamete?
23 chromosomes
Why are gametes genetically different?
Why are gametes genetically different?
Chromosomes are shuffled during meiosis
What process joins gametes?
What process joins gametes?
Fertilisation
Chromosomes after fertilisation?
Chromosomes after fertilisation?
46 chromosomes
What division does the fertilised cell use?
What division does the fertilised cell use?
Mitosis