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Question

Is eye color polygenic inheritance?


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Solution

Polygenic Inheritance

  1. Polygene refers to the gene which exerts a slight effect on a phenotype along with other genes.
  2. Effect of a single gene is too small, so it is very difficult to detect.
  3. Multiple genes also produce an equal effect.
  4. Each allele has a cumulative or additive effect.
  5. The colour of the eye is determined by the polygenes.
  6. At least 9 colours of eye colour are recognised in humans. There are two major eye colour genes and 14 more genes which determine the expression of the phenotype.

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