How many chromosomes are present in a human gamete?
Answer and explanation
Correct answer: 23
Human gametes, such as sperm and ova, are haploid cells. During meiosis, the chromosome number is reduced from the diploid body-cell number of 46 to half: 46 ÷ 2 = 23. When two gametes fuse, their 23 chromosomes combine to restore 46 in the zygote. Therefore option B is correct; 46 describes body cells, while 44 and 200 are incorrect totals.
Frequently asked questions
What is the correct answer to this question?
23
Why is this the correct answer?
Human gametes, such as sperm and ova, are haploid cells. During meiosis, the chromosome number is reduced from the diploid body-cell number of 46 to half: 46 ÷ 2 = 23. When two gametes fuse, their 23 chromosomes combine to restore 46 in the zygote. Therefore option B is correct; 46 describes body cells, while 44 and 200 are incorrect totals.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
