5
Question
Which of the following crosses will give only recessive progeny in F1 generation?
Which of the following crosses will give only recessive progeny in F1 generation?
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Solution
The correct option is C tt x tt
The cross between tt x tt will give only recessive progeny in F1 generation because both the parents produce only recessive trait (t) in gametes and the resultant progeny will always be recessive in the F1 generation (as given below).
In TT x tt, only dominant progeny will be produced in the F1 generation which will be of the genotype Tt (as given below).
In Tt x tt cross, both dominant and recessive progeny will be produced in the F1 generation in the ratio, 1:1 (as given below).
Only dominant progeny will be produced in the F1 generation in the cross between TT x TT (as given below).
The cross between tt x tt will give only recessive progeny in F1 generation because both the parents produce only recessive trait (t) in gametes and the resultant progeny will always be recessive in the F1 generation (as given below).
In TT x tt, only dominant progeny will be produced in the F1 generation which will be of the genotype Tt (as given below).
In Tt x tt cross, both dominant and recessive progeny will be produced in the F1 generation in the ratio, 1:1 (as given below).
Only dominant progeny will be produced in the F1 generation in the cross between TT x TT (as given below).