Description :

Humans have 23 pairs of chromosomes for a total of 46 chromosomes 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 how are chromosomes inherited. 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 females have two copies of the x chromosome while males have one x and one y chromosome. Most human cells contain 23 pairs of chromosomes one set of chromosomes comes from the mother while the other comes from the father the twenty third pair is the sex chromosomes while the rest of the 22 pairs are called autosomes. In humans animals and plants most chromosomes are arranged in pairs within the nucleus of a cell humans have 22 of these chromosome pairs called autosomes how sex is determined humans have an