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Incomplete dominance is characterised by
Aboth alleles expressed equally (typical)
Bheterozygote showing a phenotype intermediate between the two homozygotes
Cone allele being lethal
Dno expression of either allele
Answer & Solution
Correct answer: B. heterozygote showing a phenotype intermediate between the two homozygotes
1. When neither allele is fully dominant, the heterozygote shows an intermediate phenotype.
2. Classical example: red × white snapdragon → pink F1.
3. F2 then shows a 1 red : 2 pink : 1 white ratio rather than 3 : 1.
_Source: Maharashtra Balbharati Std XII Biology, Ch 3 "Inheritance and Variation" §3.5_
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