In a monohybrid cross, the ratio 1:2:1 is consistent with: the genotypic ratio of the offspring...

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In a monohybrid cross, the ratio 1:2:1 is consistent with: the genotypic ratio of the offspring A. B. the phenotypic ratio of

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Answer 1

Answer #1

Ans -A the genotypic ratio of the offspring

When we cross two heterozygous parents, three types of genotypes are obtained, homozygous dominant, heterozygous, and homozygous recessive in 1: 2: 1 ratio.

e.g cross of the tall plant with dwarf

TT = tall plant

tt = dwarf plant

TT x tt = Tt ( all are heterozygous in F1 generation)

Selfing of Tt

Tt x Tt = TT, Tt, Tt, tt

genotype ratio of F2 plants = TT : 2Tt: tt = 1:2:1

Phenotype ratio = 3 tall : 1 dwarf = 3 :1

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In a monohybrid cross, the ratio 1:2:1 is consistent with: the genotypic ratio of the offspring...

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