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  • Variation
    • When does variation occur?
      • INTRESPECIFIC VARIATION - this is when one species differs from another.
      • INTRASPECIFIC VARIATION - this is when members of the same species also differ from each other.
      • What causes variation?
        • MUTATION is the one factor that can cause the variation. These sudden changes in DNA may or may not be passed om.
        • MEIOSIS is the second factor. This mixes up the genetic material before it is passed into the gametes, all of which are therefore different.
        • FUSION OF GAMETES is the third factor. This is random process in which gametes from both parents are different so it adds more to the variety of offspring.
    • How do we measure it?
      • We can measure the Variance by calsulating STANDARD DEVIATION


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