Question

Diploid chromosome number in human is

• A. 46
• B. 44
• C. 48
• D. 42

Answer 1

The Correct Option is A

The diploid chromosome number is a fundamental concept in biology that relates to the number of chromosomes in a cell. Human cells are diploid, meaning they have two sets of chromosomes, one from each parent. Typically, the diploid chromosome number refers to the total number of chromosomes present in a diploid cell.

1. The chromosome number is a characteristic feature of each species, and for humans, this number is crucial for understanding heredity, variation, and cell division processes.
2. The diploid chromosome number for humans is 46. This number consists of 23 pairs of chromosomes, where each pair includes one chromosome from the mother and one from the father.
3. These 23 pairs include:
   • 22 pairs of autosomes (non-sex chromosomes), which are the same in both males and females.
   • 1 pair of sex chromosomes (XX for females and XY for males), which determine an individual's sex.
4. Options other than 46 are incorrect for the human diploid chromosome number:
   • 44: This would imply a missing pair of sex chromosomes or autosomes, which is not the case.
   • 48: This reflects an incorrect addition of an extra pair of chromosomes.
   • 42: This suggests missing pairs and does not match the human chromosomal setup.

Therefore, based on the principles of human genetics and the typical diploid number observed, the correct answer is 46.