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Home » In quantitative inheritance, when a character is controlled by two pairs of genes, the ratio obtained in F2 generation is __________ A) 1 : 2 : 1 B) 1 : 4 : 6 : 4 : 1 C) 9 : 3 : 3 : 1 D) 1 : 6 : 15 : 20 : 15 : 6 : 1
In quantitative inheritance, when a character is controlled by two pairs of genes, the ratio obtained in F2 generation is __________ A) 1 : 2 : 1 B) 1 : 4 : 6 : 4 : 1 C) 9 : 3 : 3 : 1 D) 1 : 6 : 15 : 20 : 15 : 6 : 1
biology | Biology
In quantitative inheritance, when a character is controlled by two pairs of genes, the ratio obtained in F2 generation is __________ A) 1 : 2 : 1 B) 1 : 4 : 6 : 4 : 1 C) 9 : 3 : 3 : 1 D) 1 : 6 : 15 : 20 : 15 : 6 : 1

Correct option:(B)1 : 4 : 6 : 4 : 1

Solution:

  • Skin color is quantitative or polygenic inheritance.
  • Consider a cross between a negro and a white.
  • Offsprings born in the F generation will be 1 negro, 4 dark, 6 medium, 4 light and 1 white skinned.
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