PATHOLOGY MCQ
GENETICS AND DISEASE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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pedigree
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Punnett Square
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Venn Diagram
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Karyotype
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Detailed explanation-1: -A karyotype is a photograph of chromosomes grouped in order in pairs. Karyotyping is a test to examine chromosomes in a cell, which can help identify genetic problems as the cause of a disorder or disease.
Detailed explanation-2: -A karyotype is an individual’s complete set of chromosomes. The term also refers to a laboratory-produced image of a person’s chromosomes isolated from an individual cell and arranged in numerical order. A karyotype may be used to look for abnormalities in chromosome number or structure.
Detailed explanation-3: -In a human karyotype, autosomes or “body chromosomes” (all of the non–sex chromosomes) are generally organized in approximate order of size from largest (chromosome 1) to smallest (chromosome 22). However, chromosome 21 is actually shorter than chromosome 22.
Detailed explanation-4: -A karyotype is an organized profile of a person’s chromosomes. Two chromosomes specify sex, XX for female and XY for male. The rest are arranged in pairs, numbered 1 through 22, from largest to smallest. This arrangement helps scientists quickly identify chromosomal alterations that may result in a genetic disorder.