Discussion
Which of the following abnormality, resulted from the inheritance of an unbalanced complement of chromosomes can be diagnosed by karyotyping?
Answer: D
Correct answer: all of these
All three arise from an abnormal chromosome complement and are therefore visible in a karyotype: Down’s syndrome (trisomy 21), Turner’s syndrome (a single X), and Klinefelter’s syndrome (XXY). Karyotyping detects whole-chromosome faults; it cannot show a single-gene mutation.
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