Home › NEET UG › Biology › Principles Of Inheritance › Genotypic ratio of a monohybrid F2 (Tt × Tt):
Genotypic ratio of a monohybrid F2 (Tt × Tt):
A1:2:1 (TT : Tt : tt)
B1:1
C3:1
D9:3:3:1
Answer & Solution
Correct answer: A. 1:2:1 (TT : Tt : tt)
Cross Tt × Tt yields TT (1) : Tt (2) : tt (1). Phenotypic 3:1 (T_:tt). Genotypic 1:2:1. Genotypic ratio always 'more informative' than phenotypic.
Related questions
How many chromosomes are there in a normal human cell?The gain or loss of a single chromosome is called:Turner's syndrome in human females results from the loss of:Down's syndrome results from an extra copy of chromosome:In sickle-cell anaemia the red cell changes from a biconcave disc to a:A heterozygous female for haemophilia is called a:Morgan carried out his crosses using:Who proposed the chromosomal theory of inheritance?