When a cross is made between Ttrr and Rrtt, t | vedclass

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(A) To determine the phenotypic ratio of the cross between $Ttrr$ and $Rrtt$, we can analyze the inheritance of each gene pair independently using the

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$1:1:1:1$

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(A) To determine the phenotypic ratio of the cross between $Ttrr$ and $Rrtt$, we can analyze the inheritance of each gene pair independently using the fork-line method or Punnett square.$1$. For the first gene pair ($Tt 	imes tt$ and $Rr 	imes rr$):$2$. Cross $1$: $Tt 	imes tt$ results in $Tt$ (Tall) and $tt$ (Dwarf) in a $1:1$ ratio.$3$. Cross $2$: $rr 	imes Rr$ results in $Rr$ (Round) and $rr$ (Wrinkled) in a $1:1$ ratio.$4$. Combining these independent assortments: $(1 	ext{ Tall} : 1 	ext{ Dwarf}) 	imes (1 	ext{ Round} : 1 	ext{ Wrinkled})$.$5$. This results in $1$ Tall Round : $1$ Tall Wrinkled : $1$ Dwarf Round : $1$ Dwarf Wrinkled.$6$. Thus, the phenotypic ratio is $1:1:1:1$.

When a cross is made between $Ttrr$ and $Rrtt$, the phenotypic ratio of their progeny will be:

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