Do you guys still remember different types of reproduction in I/GCSE Biology?

• Variation = result of sexual reproduction
• When gametes formed – receive half of chromosomes in body cell = half from mum + dad
• Refer to I/GCSE Biology,  Producing gametes = unlikely 2 gametes contain same variation in genes
• Unlikely 2 offspring from parents are alike – unless twins (because of variation in genes in each gamete and mixing of genes from mum and dad)

• Offspring produced by asexual reproduction
• Produced from division of cells in one parent with no need of fertilisation by sperm cell
• When it comes to I/GCSE Biology, Offspring are clones (genetically identical) + contain same chromosomes as parent
• Happens more quickly than sexual reproduction
• Some plants produce underground stems (runners) – spread quickly to outcompete others in area
• Runner – horizontal stems that some plants produce in order to create new plants by asexual reproduction
• Too hot or too cold areas - form underground storage organs, form a new plant next season
• Storage organs – a special underground organ, such as a potato, in which plants store food over winter

• Artificial clones of plant made copying asexual processes
• Cuttings can be taken – parts of plant cut off (stem or leaf), cuttings grow roots + develop into new plant
• More quicker than sexual reproduction
• More cheaper because quicker

That's all~

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