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With reference to flower colour in snapdragon, explain incomplete dominance.

With reference to flower colour in snapdragon, explain incomplete dominance.

Grade:12

2 Answers

Vikas TU
14149 Points
9 months ago
Dear student
In incomplete dominance the genes of an allelomorphic pair are not expressed as dominant and recessive but express themselves partially when present together in a hybrid and is an intermediate between the two genes. As a result an intermediate character is obtained. e.g., Two types of flowers occur snapdragon.When none of the factors of a gene is dominant, the phenotype of a heterozygous dominant individual is a blend of dominant and recessive traits. This is called as incomplete dominance. For example, flower colour in Mirabilis jalapa (Snapdragon). The red flower is the dominant character and the white flower is recessive character. 
Vikas Amritiya
askIITians Faculty 158 Points
8 months ago

When none of the factors of a gene is dominant, the phenotype of a heterozygous dominant individual is a blend of dominant and recessive traits. This is called as incomplete dominance. For example, flower colour in Mirabilis jalapa (Snapdragon). The red flower is the dominant character and the white flower is recessive character. There is blending of the two alleles. The flowers in the F1 generation will be pink in colour due to mixing of the alleles. 

 

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