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Question
Answer the following question.
British geneticist R.C. Punnett developed a graphical representation of a genetic cross called “Punnett Square”. Mention the possible result this representation predicts of the genetic cross carried.
Solution
Punnett Square for Mendelian monohybrid cross between pure line tall and the dwarf planet will appear as follows:
Parent Generation
TT x tt
↓
F1 Generation Tt
↓
Tt x Tt
(Selfing)
F2 Generation
| T | t | |
| T | TT | Tt |
| t | Tt | tt |
The result of F2 generation phenotypic ratio of a monohybrid cross is 3: 1.
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