What determines the sex of a child in humans?
Answer and explanation
Correct answer: Sex chromosomes
The governing concept is chromosomal sex determination in humans. Human females generally have XX sex chromosomes and produce ova carrying only X. Human males generally have XY chromosomes and produce sperm carrying either X or Y. Fertilisation by an X-bearing sperm gives XX, while fertilisation by a Y-bearing sperm gives XY. Thus the sex-chromosome combination determines sex; food, blood group and height do not.
Frequently asked questions
What is the correct answer to this question?
Sex chromosomes
Why is this the correct answer?
The governing concept is chromosomal sex determination in humans. Human females generally have XX sex chromosomes and produce ova carrying only X. Human males generally have XY chromosomes and produce sperm carrying either X or Y. Fertilisation by an X-bearing sperm gives XX, while fertilisation by a Y-bearing sperm gives XY. Thus the sex-chromosome combination determines sex; food, blood group and height do not.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Sex determination.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
