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In pea plants, the allele for purple flowers ( W ) is dominant to the allele...

In pea plants, the allele for purple flowers ( W ) is dominant to the allele for white flowers ( w ). To determine whether a plant with purple flowers is homozygous or heterozygous with respect to flower color, the plant should be crossed with another pea plant with what genotype and phenotype with respect to flower color?

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Answer #1

For determinine the genotype it should be test crossed that means it the F1 plant should be crossed with homozygous recessive plant and then the proportion of dominant and recessive offsprings are anyzed.If all the offsprings show the dominant type of phenotype then the parent plant is homozygous while if the offspring show both dominant and recessive phenotype then the parent is heterozygous.

Ww X ww

w w
W Ww (purple) Ww(purple)
w ww(white) ww(white)

WW X ww

All will be Ww ( purple)

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