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For example, a human cell has 46 chromosomes. In the karyotype, 23 pairs of chromosomes will be shown (23 x 2 = 46). A karyotype can show different types of mutations, depending on which chromosome it affects.For example, Down Syndrome is a trisomy in chromosome 21, so there will be THREE instead of two chromosome 21s. You can research more mutations shown by chromosomes in a karyotype.or example, a human cell has 46 chromosomes. In the karyotype, 23 pairs of chromosomes will be shown (23 x 2 = 46). A karyotype can show different types of mutations, depending on which chromosome it affects.
Down Syndrome. A karyotype is a photograph of the chromosomes in a cell. Karyotypes can be taken from blood cells, fetal skin cells (from amniotic fluid or the placenta), and bone marrow cells. Karyotypes can be used to confirm Down syndrome, which is caused by an extra copy of chromosome number 21. From a patientâs perspective, a karyotype is a simple blood test. But what happens to the blood after it is collected is actually quite complex.