Loading...
UPSC 2000: Assertion (A): In human beings, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes.
(a)Both A and R are true, and R is the correct explanation of A
(b)Both A and R are true, but R is not a correct explanation of A
(c)A is true, but R is false
(d)A is false, but R is true
Attempt This Question
Not attemptedCorrect Answer: (d) A is false, but R is true
Females possess two X chromosomes (true), but the sex of human offspring is decided by whether the fertilizing sperm carries an X or a Y chromosome; therefore males, not females, play the determining role. The assertion is false while the reason is true. ([licchavilyceum.com](https://licchavilyceum.com/upsc-civil-services-prelims-2000-solved-question-paper/?utm_source=openai))
Related UPSC Questions
More from Biotechnology & Genetics
2000moderate
Assertion (A): “DNA Finger-printing” has become a powerful tool to establish paternity and identity of criminals in rape and assault cases. Reason (R)
1999moderate
Indian farmers are unhappy over the introduction of “Terminator Seed Technology” because the seeds produced by this technology are expected to
1999moderate
Assertion (A): Insect-resistant transgenic cotton has been produced by inserting Bt gene. Reason (R): The Bt gene is derived from a bacterium.
Related Science & Technology Topics
2000Energy & Environment
Consider the following features of newer models of motor cars: I. Radial tyres II. Streamlined body III. Multipoint fuel injection IV. Catalytic conve
2000Physics
When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow-like colours are seen. This can be explained on the basis of the
Frequently Asked Questions
What is the correct answer to this UPSC 2000 Science & Technology question?▼
The correct answer is option (d): A is false, but R is true. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Biotechnology & Genetics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2000, GS Paper 1, as Question 127. It falls under Science & Technology > Biotechnology & Genetics.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Biotechnology & Genetics?▼
UPSC has asked 54 questions from Biotechnology & Genetics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.