Biology - Principles of Inheritance and Variation Question with Solution | TestHub

Let the heterozygous individuals be represented as $Tt$.

The monohybrid cross is $Tt\times Tt$.

The offspring produced in the generation are $TT$, $Tt$, $Tt$, and $tt$ in the ratio $1:2:1$.

The homozygous individuals are $TT$ (homozygous dominant) and $tt$ (homozygous recessive).

The proportion of homozygous individuals is $\frac{1}{4}+\frac{1}{4}=\frac{2}{4}=\frac{1}{2}$.

The percentage of homozygous individuals is $\frac{1}{2}\times 100\%=50\%$.

Answer: $50\%$