Question

t - tall and t = short
in the punnett square below, what belongs in the missing square
tt
bb
tt
tt

Explanation:

Step1: Identify parent genotypes

Assume the Punnett square is from a cross between a heterozygous tall parent ($Tt$) and a heterozygous tall parent ($Tt$), as the visible squares show combinations of $T$ and $t$.

Step2: Fill Punnett square cells

The Punnett square for $Tt \times Tt$ is:

$$\begin{array}{c|cc} & T & t \\ \hline T & TT & Tt \\ t & Tt & tt \\ \end{array}$$

The missing cell (bottom left) is $Tt$.

Answer:

Tt