Botany · Principles of Inheritance and Variation

NEET (UG) 2024 — Question 116

In a plant, black seed color (BB/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?

Option A:
$BB$
Option B:
$bb$
Correct
Option C:
$Bb$
Option D:
$\mathrm{BB} / \mathrm{Bb}$

Answer: B

Step-by-step 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 $(\mathrm{BB} / \mathrm{Bb})$ black seed we need to cross them with white seed i.e. bb.

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Exam: NEET (UG) 2024
Paper: 2024 paper
Subject: Botany
Chapter: Principles of Inheritance and Variation
Topic: Inheritance of One Gene

Answer: B

Step-by-step solution

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