PATHOLOGY

Detailed explanation-1: -In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39. In humans, the twenty-third pair is the sex chromosomes, while the first 22 pairs are called autosomes.

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: -A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.

Detailed explanation-4: -Chromosomes are found inside your cells. Such tight packing allows the DNA to fit inside a tiny cell. You have 23 pairs of chromosomes in each cell, different types, so that’s 46 per cell-a magic number!