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Question

What is an example of polygenic inheritance?


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Solution

Polygenic inheritance:

  1. The inheritance in which a single trait is inherited by two or more genes is called polygenic inheritance.
  2. Polygenic inheritance is quantitative in which environmental factors determine a phenotype.
  3. Polygenic inheritance does not follow Mendel's laws of inheritance.

Example :

Human height:

  1. It is also called a multifactorial trait in which a trait ( height ) is influenced by multiple genes and also affected by the environmental factors such as nutrition.
  2. Human height is an example of continuous variation in which people display a wide range of heights.

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