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4.Principles of Inheritance and Variation
medium
In a plant, black seed color $(\mathrm{BB} / \mathrm{BB})$ is dominant over white seed color ($bb$). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it?
A
$\mathrm{bb}$
B
$\mathrm{Bb}$
C
$\mathrm{BB} / \mathrm{Bb}$
D
$\mathrm{BB}$
(NEET-2024)
Solution
To determine the genotype of a black seed colour at $F_2$, the black seed from $F_2$ is crossed with the white seed colour. This is called a test cross.
$\therefore$ To determine the genotype of $(B B / B b)$ black seed we need to cross them with white seed i.e. $bb$.
Standard 12
Biology
