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NEET2007ZoologyPrinciples of Inheritance and VariationActual

Inheritances of skin colour on humans is an example of:

Options

  1. Apoint mutation
  2. Bpolygenic inheritance
  3. Ccodominance
  4. Dchromosomal aberration.

Correct answer

B. polygenic inheritance

Step-by-step solution

Inheritance of skin colour in human is controlled by three pairs of genes, A , B and C which is polygenic inheritance. Codominance is shown by Blood group AB . Chromosomal aberration and point mutation change the genetic sequence of human genome. Related Theory Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many genes in contrast to monogenic inheritance in which the trait results from the expression of one gene (or one gene pair). Polygenic inh

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