NEET BIOLOGY

Detailed explanation-1: -A normal human karyotype consists of 22 pairs of autosomes and two sex chromosomes . Note the similar size and striped (banding) pattern between each of the pairs. The autosomal chromosome pairs are numbered and arranged from largest to smallest.

Detailed explanation-2: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.

Detailed explanation-3: -Chromosome Humans have 22 pairs of numbered chromosomes (autosomes) and one pair of sex chromosomes (XX or XY), for a total of 46.

Detailed explanation-4: -Females have two X chromosomes, while males have one X and one Y chromosome. A picture of all 46 chromosomes in their pairs is called a karyotype. A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.

Detailed explanation-5: -The first 22 pairs are called autosomes. The 23rd pair consists of the sex chromosomes, X and Y. Females usually have two X chromosomes, and males usually have one X and one Y chromosome in each cell.