The given diagram shows the karyotype of a person. The abnormality indicated by this karyotype is:
Correct answer: A. Klinefelter's syndrome
- A. Klinefelter's syndrome
- B. Turner's syndrome
- C. Down syndrome
- D. Patau's syndrome
Explanation
Option A is correct, as the figure shows an extra X chromosome in the male. Klinefelter's syndrome is characterized by an extra X chromosome in males, resulting in a 47,XXY karyotype. The 13 and 21 chromosomal pairs are normal, and the individual is a male, not a female (Turner not possible). So B, C, and D are incorrect.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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