Question

Haploid chromosome number of human body cells is
A. 21
B. 22
C. 23
D. 46

Answer 1

Hint: Chromosomes are the thread-like structures present inside the nucleus of plant cells and animal cells.

Complete Answer:
Chromosomes: Chromosomes consist of protein and a molecule of DNA ( Deoxyribonucleic acid).
- Chromosomes are only visible during the time of cell division.
- Each chromosome is divided into two sections from the centromere.
- The two sections are called p-arm and q-arm.

Haploid chromosomes: Haploid chromosome is a single set of chromosomes.
- It is represented by ‘n’.
- The haploid chromosomes are found in the gamete cells of male and female i.e. sperm and ova.
- The number of haploid chromosomes in human body cells is 23.

Diploid chromosomes: Diploid chromosomes have paired chromosomes.
- It is represented by ‘2n’.
- The diploid chromosomes are found in the somatic cells i.e. all body cells.
- The number of diploid chromosomes in human body cells is 46.
- So, the Haploid chromosome number of human body cells is 23.

Hence, the option C is the right option.

Note: Point to be noted that the haploid chromosomes are only present in the gamete cells of humans, all other cells of the human body have diploid chromosomes.