Variation
Mindmap to help with variation causes and investigation
- Created by: Rebecca Crackett
- Created on: 14-04-13 11:24
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- Variation
- The differences that exist between individuals
- Interspecific: Variation between different species
- Intraspecific: Differences that occur within a species
- Caused by:
- Genetic Factors (Same alleles, blood type, eye colour) This is inherited from your parents
- All members of a species have the same genes (that's what makes them the same species)
- Individuals have different versions of those genes = Alleles
- The alleles an organism has makes up its genotype
- This results in different phenotypes (characteristics)
- The alleles an organism has makes up its genotype
- Individuals have different versions of those genes = Alleles
- All members of a species have the same genes (that's what makes them the same species)
- Environmental Factors (illness, hair colour, height, temperature)
- Genetic Factors (Same alleles, blood type, eye colour) This is inherited from your parents
- Caused by:
- Can be a combination of both genetic and environmental factors
- E.G. Someone may have the genes to grow to 6 feet tall, but their diet could affect this
- When studying variation you only have to look at a sample of the population
- Too time consuming/ pretty much impossible
- Samples used as models for whole population
- Cannot be biased - must be random
- The differences that exist between individuals
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