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Francine is studying the karyotype of a human subject in a medical study. she observes that the karyotype shows three copies of chromosome 21. all of the other chromosomes have two copies. which conclusion about the subject is supported by francine's observations?

Sagot :

3 copies of chromosome in karyotype shows that person has genetic disorder called down syndrome.

What do you mean by karyotype?

A karyotype test examines the structure, shape, and number of chromosomes in your body. The sections of our cells that hold your genes are called chromosomes.

Instead of having one copy of chromosome 21, an egg or sperm cell may preserve both copies. If this egg or sperm is fertilized, the baby will be born with three copies of chromosome 21. This is referred to as trisomy 21. Trisomy 21 is present in around 95% of people with Down syndrome. Instead of the usual two copies of chromosome 21, each cell in the body has three copies of chromosome 21 in this kind of Down syndrome.

Learn more about genetic disorders here:

https://brainly.com/question/7850448

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