Three crosses were carried out in pea plants with respect to flower colour violet/white (V/v) and flower position axial/terminal (A/a). Study in the table the crosses ‘a’, ‘b’ and ‘c’ where parental phenotypes and their $F_1$ progeny phenotypes are given.
Find the genotypes of each of the parental pairs of crosses ‘a’, ‘b’ and ‘c’.
Three crosses were carried out in pea plants with respect to flower colour violet/white (V/v) and flower position axial/terminal (A/a). Study in the table the crosses ‘a’, ‘b’ and ‘c’ where parental phenotypes and their $F_1$ progeny phenotypes are given.
Find the genotypes of each of the parental pairs of crosses ‘a’, ‘b’ and ‘c’.
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Solution and Explanation
(a) Cross: Violet, axial × White, axial Genotype of parents: $VvAa \times vvAa$ Explanation: $6/16$ Violet, axial: $VvAa$ $2/16$ White, terminal: $vvAa$ $6/16$ Violet, axial: $VvAa$ $2/16$ Violet, axial: $VvAa$
(b) Cross: Violet, axial × White, terminal Genotype of parents: $VvAa \times vvaa$ Explanation: $1/4$ Violet, axial: $VvAa$ $1/4$ Violet, terminal: $Vvaa$ $1/4$ White, axial: $vvAa$ $1/4$ White, terminal: $vvaa$
(c) Cross: Violet, axial × Violet, axial Genotype of parents: $VvAa \times VvAa$ Explanation: $3/4$ Violet, axial: $VvAa$ $1/4$ White, axial: $vvAa$
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