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3 Cards in this Set

  • Front
  • Back

Continuous variation

This is where the phenotypes of organisms do not fall into distinct classes. E.g height

Discontinuous variation

Characteristics in organisms fit into distinct forms

Causes of variation

-mutations


-crossing over (prophase 1 meiosis)


-random assortment of pairs of homologous chromosomes (metaphase 1 meiosis )


-random mating between individuals in a species.


-random fusion of gametes at fertilization.


-environmental factors