3.1 Sexual and Asexual reproduction

Sexual reproduction:
Show sex (genders – male/female)
Produce cells called gametes (male=sperm female=egg)
Meiosis- the type of cell division that produces gametes –effect: half the total number of chromosomes in the gamete cell (e.g. chromosomes. Humans: 46 per cell Gametes: 23 per cell, the process from going from 46 to 23 is called Meiosis.
Fertilisation (gametes cells from a male (sperm) fuse together with the gamete cell from a female (egg))
Broad variation (many differences in individuals of population)

Asexual reproduction:
DO NOT show sex (genders – male/female)
No gametes
Mitosis (in eukaryotic cells) /binary fission (in prokaryotic bacterial cells) cell with 20 chromosomes  2 cells (each with 20 chromosomes -identical)
No fertilisation (because no gametes)
Small variation – due to mutation (they are identical ‘clone’)


Quetion: What are eukaryotic cells and prokaryotic bacterial cells?