High School

In pumpkins, white fruit (W) is dominant to orange fruit (w). The Punnett square shows a cross between a homozygous dominant plant and a homozygous recessive plant.

\[
\begin{array}{c|c|c}
& W & W \\
\hline
w & Ww & Ww \\
\hline
w & Ww & Ww \\
\end{array}
\]

If the resulting offspring are self-pollinated, what percentage of the offspring of that cross will be white?

A. 0%
B. 25%
C. 50%
D. 75%

Answer :

If the resulting offspring are self-pollinated, the percentage of offspring that will be white is 75%, (D).

How to determine percentage?

If a homozygous dominant plant (WW) is crossed with a homozygous recessive plant (ww), all of the offspring will be heterozygous (Ww) because the dominant allele (W) will always be expressed in the phenotype.

When the resulting offspring are self-pollinated, the Punnett square shows that the genotype ratio of their offspring will be 1:2:1 (WW : Ww : ww) and the phenotype ratio will be 3:1 (white : orange).

Therefore, the percentage of offspring that will be white is 75%, or answer choice (D).

Find out more on offspring percentage here: https://brainly.com/question/24975104

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