What notation would you use to characterize patient karyotype? Patient A is the nearly full-term fetus of a forty-year-old female. Chromosomes were obtained from fetal epithelial cells acquired through amniocentesis.
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This procedure involves extracting a small amount of amniotic fluid, which contains fetal cells, from the amniotic sac surrounding the fetus. Show more…
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Patient A is the nearly full-term fetus of a forty-year-old female. Chromosomes were obtained from fetal epithelial cells acquired through amniocentesis. Lab technicians compile karyotypes and then use a specific notation to characterize the karyotype. This notation includes the total number of chromosomes, the sex chromosomes, and any extra or missing autosomal chromosomes. For example, 47, XY, +18 indicates that the patient has 47 chromosomes, is a male, and has an extra autosomal chromosome 18. 46, XX is a female with a normal number of chromosomes. 47, XXY is a patient with an extra sex chromosome. 1. What notation would you use to characterize Patient A's karyotype?
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A geneticist provides you with information about a karyotype, indicating that the karyotype is 45, XY, -4. What does this notation mean?
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What does the karyotype notation 47,XY,+21 explain about genetic sex, number of chromosomes, and chromosomal rearrangements of a person?
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