Meiosis (AQA GCSE Biology): Flashcards
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Definition of meiosis
Definition of meiosis
Formation of 4 non-identical cells from 1 cell
Location of meiosis
Location of meiosis
Reproductive organs
Cells produced by meiosis
Cells produced by meiosis
Gametes
Chromosome number in gametes
Chromosome number in gametes
23 (one copy of each)
First step in meiosis
First step in meiosis
Cell makes copies of chromosomes
Chromosomes per cell after 1st division
Chromosomes per cell after 1st division
46
Chromosomes per cell after 2nd division
Chromosomes per cell after 2nd division
23
Genetic similarity of gametes
Genetic similarity of gametes
All genetically different from each other
Cause of genetic variation in gametes
Cause of genetic variation in gametes
Chromosomes shuffled during meiosis
Process where gametes join
Process where gametes join
Fertilisation
Chromosomes after fertilisation
Chromosomes after fertilisation
46 (normal number)
Type of division after fertilisation
Type of division after fertilisation
Mitosis
Structure formed from many cells
Structure formed from many cells
Embryo
Process of cells taking on different roles
Process of cells taking on different roles
Differentiation
Number of cells produced by meiosis
Number of cells produced by meiosis
Four