Question

In hybridization, Tt x tt give rise to the progeny of ratio [CBSE PMT 1999; RPMT 1999; BVP 2000; Pb. PMT 2000; BHU 2003]
A) 1 : 1
B) 1 : 2
C) 2 : 1
D) 1 : 2: 1

Answer 1

I hope so that to 2:1what is the correct answer

Answer 2

Answer:

In the given hybridization,a Tt x tt cross give rise to the progeny of ratio 1:1.

Explanation:

It is an example of a test cross in which a heterozygous dominant( Tt) individual is crossed with a homozygous recessive individual( tt).

Tt × tt ( parents)------> Tt, Tt, tt, tt ( progeny)

We get the progeny in the ratio of 2:2 which is 1:1.