Reproduction
- Created by: ukgamer321
- Created on: 26-04-14 11:27
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- Reproduction
- Asexual
- 1 parent needed
- 1. X shaped chromosomes have 2 identical halves
- 2. Each chromosome splits down the middle to form identical sets of half chromosomes. A membrane forms around each set
- 3. Then the DNA replicates itself to form 2 identical cells with X shaped chromosomes.
- 2. Each chromosome splits down the middle to form identical sets of half chromosomes. A membrane forms around each set
- offspring are genetically identical to parent (clones)
- advantages
- easily create more
- faster
- less time/ energy
- Sexual
- 1. Each gamete (sperm and egg) contains 23 chromosomes- half the number of chromosomes in a normal cell
- 2. the egg and sperm fuse together (fertilisation) to form a cell with the full number of chromosomes
- offspring are genetically different from parents but will inherit some features from both
- advantages
- genes carrying illnesses etc may not be passed on
- population will not die if changes to environment/ new disease
- 1. Each gamete (sperm and egg) contains 23 chromosomes- half the number of chromosomes in a normal cell
- Asexual
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