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The iris of the human eye can have many colors, including brown, blue, green, and hazel. How does polygenic inheritance explain why many iris colors are possible

Respuesta :

Answer: The color of the iris is the example of polygenic inheritance.

Explanation:

Polygenic inheritance can be defined as the inheritance in which one trait is controlled by the two or more than two genes. The color of the skin, color of iris, weight and height are polygenic traits. The color of the iris is the polygenic trait the number of genes responsible for this are unknown but these genes are responsible for the synthesis of melanin pigment imparting color to the iris. OCA2 and HERC2 are the chief genes present on chromosome 15 responsible for this trait. Dark brown and black eyes are expected to have more amount of melanin as compared to the green and hazel eyes.

luisvaschetto

The iris of the human eye can have many colors because this trait is controlled by polygenic inheritance.

  • Polygenic traits are phenotypic features controlled by more than two genes that exhibit minor effects on the variation of the trait.

  • Polygenic traits exhibit a continuous range of variation (e.g., normal distribution).

  • When drawing, genetic variation of polygenic traits shows a bell-shaped curve in the population because most individuals inherit different combinations of alleles.

In conclusion, the iris of the human eye can have many colors because this trait is controlled by polygenic inheritance.

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https://brainly.com/question/1430191

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