alleryThe F₂ **genotypic** ratio of a Mendelian monohybrid cross is:
A3 : 1
B1 : 1
C1 : 2 : 1
D9 : 3 : 3 : 1
Answer & Solution
Correct answer: C. 1 : 2 : 1
Tt × Tt → 1 TT : 2 Tt : 1 tt — three genotypes in a 1:2:1 ratio.
The phenotypic ratio (3:1) arises by lumping TT and Tt as dominant phenotype.
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