The sex chromosomes of human beings and other mammals are designated by scientists as x and y In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes. Typically, there are 46 chromosomes in each human cell This usually includes a pair of sex chromosomes and 22 pairs of autosomes Autosomes are all chromosomes that are not sex chromosomes. The male gametes, or sperm cells, in humans and other mammals are heterogametic and contain one of two types of sex chromosomes
Sperm cells carry either an x or y sex chromosome. The number of chromosomes in the gametes of human beings is 23 For example, somatic cells in humans contain 46 chromosomes, while diploid somatic cells have two sets of homologous chromosomes, one of which is a copy of the human sex cells Egg and sperm cells have just 23 chromosomes each, half as many chromosomes as regular cells. The remaining 23rd pair consists of the sex chromosomes, which determine an individual’s biological sex Females have two x chromosomes (xx), while males have one x and one y chromosome (xy)
Chromosomes are tightly coiled bundles of dna found in the nucleus of almost every cell in our body Humans have 23 pairs of chromosomes Other living things have a different number of chromosomes.
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