Question

Assume that white color is dominant over yellow color in squash. If pollen from the anthers of a heterozygous white-fruited plant is placed on the pistil of a yellow-fruited plant, show using ratios the genotypes and phenotypes you would expect the seeds from this cross to produce. 1. Genotypes 1/2 Ww 1/2 Ww 1:1 ratio | Phenotypes All white 1:0 ratico

2. Genotypes 1/2 wW 1/2 ww 1:1 ratio | Phenotypes 1/2 white 1/2 yellow 1:1 ratio
3. Genotypes- 3/4 Ww 1/4 ww 1:1 ratio | Phenotypes 3/4 white 1/4 yellow- 1:1 ratio
4. Genotypes-1/2 ww 1/2 ww = 1:1 ratio l Phenotypes-1/2 white 1/2 yellow-1:1 ratio

Answer 1

2. Genotypes 1/2 Ww 1/2 ww 1:1 ratio | Phenotypes 1/2 white 1/2 yellow 1:1 ratio

Step-by-step explanation:

This question involves a single gene coding for fruit color in squash. The allele for white color (W) is dominant over the allele for yellow color (w).

If a heterozygous white-fruited plant (Ww) is crossed with a yellow-fruited plant (ww), the following gamete combinations will be produced by each parent:

Ww- W and w

ww- w and w

Using these gametes in a punnet square (see attached image), offsprings with genotypes: Ww and ww will be produced in the ratio 1:1

(1/2) Ww will be phenotypically white-fruited

(1/2) ww will be phenotypically yellow-fruited

Hence, the seed offsprings of this cross will possess:

Genotypes 1/2 Ww, 1/2 ww in 1:1 ratio

Phenotypes 1/2 white, 1/2 yellow in 1:1 ratio