alleryIncomplete 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_
Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission
Browse all Unit 5C: Non-Mendelian Genetics & Population Transmission questions for AP Biology, or explore more Biology topics.
Related questions
Which of the following is **not** a stop codon?The semiconservative nature of DNA replication was experimentally proved by:The F₂ **genotypic** ratio in Mendel's monohybrid cross is:In Mendel's monohybrid cross between true-breeding tall (TT) and dwarf (tt) plants, the F₂Mendel conducted his hybridisation experiments on which plant?In the Watson-Crick double helix, adenine pairs with thymine via how many hydrogen bonds?In birds, the sex-determination mechanism is:Down syndrome in humans is caused by