White fruit color in summer squash is governed by the dominant allele W and colo
ID: 96445 • Letter: W
Question
White fruit color in summer squash is governed by the dominant allele W and colored fruit by its recessive allele, w. Yellow fruit color is governed by an independently assorting gene, G, and green fruit color by the recessive allele g. When white dihybrid plants are crossed, the F2 offspring appear in the ratio of 12 white: 3 yellow: 1 green. What fruit colors ratios are expected from the following crosses? a. Wwgg times WwGG b. WwGg times green c. Wwgg times wwGg d. WwGg times Wwgg e. If two plants are crossed and produce 1/2 yellow and 1/2 green progeny, what are the parents' genotypes and phenotypes?Explanation / Answer
a. Wwgg x WwGG
WG
WG
12 white, 4 yellow
b. WwGg x wwgg
8 white, 4 yellow, 4 green
c. Wwgg x wwGg
8 white, 4 yellow, 4 green
d. WwGg x Wwgg
12 white, 2 yellow, 2 green
e. For half geen and half green progeny, both parents must be recessive for white. One parent should be heterozygous for yellow color and one parent should be recessive (wwGg x wwgg)
Wg Wg wg wgWG
WWGg WWGg WwGg WwGgWG
WWGg WWGg WwGg WwGg wG WwGg WwGg wwGg wwGg wG WwGg WwGg wwGg wwGgRelated Questions
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