alleryIn a monohybrid cross Tt × Tt, the phenotypic ratio in F2 is:
A3:1 (dominant:recessive)
B1:1
C1:2:1
D9:3:3:1
Answer & Solution
Correct answer: A. 3:1 (dominant:recessive)
Tt × Tt: TT : Tt : tt = 1:2:1 (genotypic).
**With T dominant:** TT and Tt show same phenotype (tall) and tt is dwarf.
**Phenotypic ratio:** 3 tall : 1 dwarf.
Keep practising Principles of Inheritance and Variation
Browse all Principles of Inheritance and Variation questions for NEET UG, or explore more Biology topics.
Related questions
Which genotype shows the sickle-cell trait but not the disease?Pleiotropy in most cases arises from a gene's effect on:Mendel's study was the first in biology to apply which tools?How many chromosome combinations can independent assortment give a human gamete?Which karyotype is found in Turner's syndrome?Gynaecomastia in an otherwise masculine individual is a sign of:What is the karyotype of a person with Klinefelter's syndrome?Who first described Down's syndrome in 1866?