Activity 15: Karyotypes & Genetics Disorders

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Last updated 10:45 PM on 6/14/26
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8 Terms

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Karyotype

A picture of all the chromosomes in a cell arranged in pairs

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Down Syndrome (Trisomy 21)

a genetic disorder caused by a trisomy of the twenty-first chromosome

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Trisomy

3 copies of a chromosome

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Monosomy

Chromosomal abnormality consisting of the absence of one chromosome from the normal diploid number

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Turner Syndrome

A chromosomal disorder in females in which either an X chromosome is missing, making the person XO instead of XX.

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Klinefelter syndrome

A chromosomal disorder in which males have an extra X chromosome, making them XXY instead of XY.

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karyotype notation

1. # of chromosomes

2. sex chromosomes

3. extra or missing chromosomes

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How are karyotypes prepared?

By pairing up chromosomes based on size of the chromosome, centromere location and staining patterns