Basic Principles of Inheritance
CBSE · Class 11 · Biotechnology
Most important questions from Basic Principles of Inheritance for CBSE Class 11 Biotechnology board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which trait is dominant in the monohybrid cross between tall and dwarf pea plants?
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Tall
In this cross, tall is dominant over dwarf.
Which genotype ratio is found in the F2 generation of a monohybrid cross?
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1:2:1
The genotypic ratio in the F2 generation of a monohybrid cross is 1:2:1.
What is the phenotypic ratio in the F2 generation of a monohybrid cross between tall and dwarf plants?
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3:1
The F2 phenotypic ratio is 3 tall : 1 dwarf.
What is a test cross used for?
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To determine whether a dominant phenotype is homozygous or heterozygous
A test cross helps identify the genotype of a dominant-looking organism by crossing it with a recessive one.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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