How many chromosomes does a human sex cell contain

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Human mitochondrial DNA. Please Choose a Product. While the chromosomes for other parts of the body are the same size and shape — forming an identical pairing — the X and Y chromosomes have different structures. Sex cells only have 23 chromosomes. However, a small percentage of humans have a divergent sexual development, known as intersex.

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Chromosomes Fact Sheet

Now I am using it to help me pass the last 2 subtest exams. Autosomes differ from allosomes because autosomes appear in pairs whose members have the same form but differ from other pairs in a diploid cellwhereas members of an allosome pair may differ from one another and thereby determine sex. This explains why children inherit some of their traits from their mother and others from their father. Humans have 22 chromosome pairs and two sex chromosomes. Because they retain their telomeres, such cells generally live longer than other cells. Trisomy X syndrome is caused by three X chromosomes instead of two.

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