Variation

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Interspecific: The variation that exists between different species.
Intraspecific: The variations that occur within a species, caused by genetic and environmental factors.
Genetic Factors:
- All members of a species has the same genes.
- Individuals have different versions of those genes, called alleles.
- The alleles make up the organism's genotype.
- Different genotypes results in variation in the phenotype.
Environmental Factors:
- For example, plant growth is affected by the amount of minerals in soil.
Variation is a combination of genetic and environmental factors.