N pea plants there is complete dominance for the trait of flower color. the p allele produces purple flowers and p produces whit

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2 years ago

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N pea plants there is complete dominance for the trait of flower color. the p allele produces purple flowers and p produces whit

e flowers. a cross of two pea plants which are both heterozygous for flower color will produce offspring with the genotypic ratio

Biology

1 answer:

Reptile [31] · Answer 1 · 2022-08-26T15:16:26+03:00

PP- purple homozygote
pp- white homozygote
Pp- purple hetrozygote

If these flowers cross, we obtain heterozygote offsprings with a genotype: Pp (100% of them will be like this)

Now, if those offsprings cross with each other: Pp x Pp
results:
1/4 would be purple homozygote -> PP
1/4 would be white -> pp
2/4 would be purple heterozygotes -> Pp
Genotipic ratio: 3:1 (3 are purple; 1 is white)