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Important Questions

Genetics and Heredity

Telangana Open School (TOSS) · Class 12 · Biology

Most important questions from Genetics and Heredity for Telangana Open School (TOSS) Class 12 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

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50 Questions·
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Sample Questions

1multiple choice
1 marks

What is the genotype of a homozygous tall pea plant?

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TT

A homozygous tall pea plant has two identical dominant alleles, represented as TT.

2multiple choice
1 marks

Which generation is produced by self-pollination of F1 plants?

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F2 generation

The F2 generation is obtained by self-pollinating the F1 hybrid plants.

3multiple choice
1 marks

What is the term for alternative forms of a gene?

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Alleles

Alleles are alternative forms of a gene that control contrasting traits.

4multiple choice
1 marks

In pea plants, tallness is dominant over dwarfness. What would be the phenotype of a plant with genotype Tt?

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Tall

Since T (tall) is dominant over t (dwarf), a heterozygous plant (Tt) will express the tall phenotype.

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Frequently Asked Questions

What are the important topics in Genetics and Heredity for Telangana Open School (TOSS) Class 12 Biology?
Genetics and Heredity covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Genetics and Heredity — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 50 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Genetics and Heredity?
There are 50 practice questions available for Genetics and Heredity. These cover multiple question types including MCQs, short answer, and long answer questions.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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