InterviewSolution
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InterviewSolution
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Question : Describe incomplete dominance. |
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Answer» Solution : When experiments on peas were repeated using other traits in other plants it was found that sometimes the `F_1` had a phenotype that did not resemble either of the two parents and was in between the two. = The inheritance of flower colour in the dog flower (Snapdragon or Antirrhinum SP.) is a GOOD EXAMPLE to understand incomplete dominance. =In a cross between true - breeding red flowered (RR) and true - breeding white flowered plants (rr) the `F_1` [Rr] was pink. = When the `F,_1` was self POLLINATED the `F_2` resulted in the following ratio 1 (RR) Red : 2[Rr] Pink : 1 [rr] White. = Here the genotype ratios were exactly as we would expect in any mendelian monohybrid cross, but the phenotype ratio had changed from the 3:1 dominant: recessive ratio. = .R. was not completely dominant over r and this made it POSSIBLE to distinguish Rr as pink from RR [red] and rr (white). 
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