When Gregor Mendel performed his breeding experiments on pea plants, he discovered that tallness in the plants is inherited through a simple dominant trait (coded "T") with shortness as the recessive trait (coded "t"). Imagine that Mendel bred a homozygous dominant pea plant with a pea plant heterozygous for tallness. Draw a Punnett Square to help you answer this question and the next one:
In the 1st generation of offspring, we expect the
The parents will have genotypes as
TT( homozygous tall parent ) and
Tt( heterozygous tall parent )
So, crossing both the parents we get punnet square as:
| T | t | |
| T | TT | Tt |
| T | TT | Tt |
TT (Homozygous tall)= 50%
Tt (Heterozygous tall)= 50%
It can be observed that there are equal chances of First-generation offspring being tall.
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