PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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presence of 2 sex chromosomes
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23 pairs of chromosomes
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difference in the size of 2 homologous chromosomes
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different chromosome sets with different centromere locations
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Detailed explanation-1: -Karyotype testing may be needed to help diagnose and treat conditions such as: Leukemia. Lymphoma. Multiple myeloma.
Detailed explanation-2: -Some chromosomal disorders that may be detected include: Down syndrome (Trisomy 21), caused by an extra chromosome 21; this may occur in all or most cells of the body. Edwards syndrome (Trisomy 18), a condition associated with severe mental retardation; caused by an extra chromosome 18.
Detailed explanation-3: -To obtain a view of an individual’s karyotype, cytologists photograph the chromosomes and then cut and paste each chromosome into a chart, or karyogram, also known as an ideogram. In a given species, chromosomes can be identified by their number, size, centromere position, and banding pattern.