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Causes Of Variation

  • 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.
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