4) In soybean, broad leaf is incompletely dominant over narrow. The heterozygote is intermediate. Purple is dominant over white. a) What will be the phenotypic ratio of F2 of a broad leaved plant with a homozygous purple flower crossed with a narrow leaf white flowered plant? b) What will be the offspring of the cross between F1 and narrow leaf white flowered plant....
Answers
Answer:
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According to the given details:
Broadleaf = BB
Narrow Leaf = bb
Intermediate leaf = Bb
Purple flower = PP
White flower = pp
a) Phenotypic ratio of F2 of a broad-leaved plant with a homozygous purple flower crossed with a narrow leaf white flowered plant:
Incomplete dominance outcomes from a cross in which each parental assistance is genetically unique and provides rise to progeny whose phenotype is moderate. Incomplete dominance is also related to as semi-dominance and partial dominance.
BBPP × bbpp
So phenotypic ratio of F2 generation is
3:6:3:1:2:1
b) Offspring of the cross between F1 and narrow leaf white-flowered plant.
1:1:1:1
it is a type of test cross.
a genetic cross between a homozygous recessive individual and a complementary judged heterozygote to infer the genotype of the latter.