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Sex Determination

Telangana Open School (TOSS) · Class 12 · Biology

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

40 questions25 flashcards5 concepts

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40 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple choice
1 marks

What does the term 'heterogametic' refer to?

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Produces dissimilar gametes

Heterogametic individuals produce two types of gametes with respect to sex chromosomes, like males in humans (X or Y).

2multiple choice
1 marks

In humans, which sex is heterogametic?

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Male

Human males are heterogametic because they produce two types of sperm: one with X and one with Y chromosome.

3multiple choice
1 marks

What is the sex chromosome configuration in female Drosophila?

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XX

Female Drosophila have two X chromosomes, making their configuration XX.

4multiple choice
1 marks

Which of the following is an example of female heterogamety?

Show answer

Birds

In birds, females are heterogametic (ZW) and males are homogametic (ZZ), which is an example of female heterogamety.

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Frequently Asked Questions

What are the important topics in Sex Determination for Telangana Open School (TOSS) Class 12 Biology?
Sex Determination 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 Sex Determination — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 40 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 Sex Determination?
There are 40 practice questions available for Sex Determination. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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