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  • In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is  (a) 1 : 3  (b) 3 : 1  (c) 1 : 1  (d) 2 : 1

In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is 
(a) 1 : 3 
(b) 3 : 1 
(c) 1 : 1 
(d) 2 : 1 

Answers (1)

Answer: (d)

Solution:
Parent generation                 TT (pure tall) x tt (pure dwarf)
Gametes                                     T                         t
F1 generation                            Tt (heterozygous tall)
F2 generation

F2 Generation Phenotypic ratio = 3:1
Genotypic ratio = 1: 2: 1
Therefore, option (d) is correct.

Posted by

infoexpert26

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