Principles of Inheritance and Variation Question 5
5. In Antirrhimum (Snapdragon), a red flower was crossed with a white flower and in
[2019]
(a) This experiment does not follow the principle of dominance.
(b) Pink colour in
(c) Ratio of
(d) Law of Segregation does not apply in this experiment.
Show Answer
Answer : d
Hints & Solution
(d) Genes for flower colour in snapdragon shows incomplete dominance which is an exception of Mendel’s first principle (i.e. Law of dominance), whereas Law of segregation is universally applicable. Incomplete dominance is a process when a dominant allele, or form of a gene, does not completely mask the effects of a recessive allele, and the organism’s resulting physical appearance shows a blending of both alleles.
