Class 12 · Principles of Inheritance and Variation

Monohybrid Cross and Heterozygous Traits — NEET Biology

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📖 NCERT Source

The Tt plant is heterozygous for genes controlling one character (height), it is a monohybrid and the cross between TT and tt is a monohybrid cross.

NCERT Biology · Class 12 · Chapter 4 · Paragraph 20
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QuestionPractice Question

Which cross is called a monohybrid cross?

📖 Solution & NCERT Explanation
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Correct answer: D RR × tt

A cross involving one character (one gene) is a monohybrid cross; RR × tt is the analogous example to TT × tt described in the notes.

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What does NCERT say about Tt plant heterozygous for?
The Tt plant is heterozygous for genes controlling one character (height), it is a monohybrid and the cross between TT and tt is a monohybrid cross.
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Principles of Inheritance and Variation, Class 12 NCERT Biology.

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