Question Bank [2022] — BIOLOGY STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYQuestion Bank [2022]3 Marks
Question
What are the different characters that develop due to Klinefelter's syndrome?
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Answer
Klinefelter syndrome (XXY males):
It is a chromosomal disorder caused due to an extra X chromosome in males. Thus genotype of individuals is 44 + XXY. They are described as feminized males.
The extra chromosome is a result of the non-disjunction of the X-chromosome during meiosis.
The individual is male and has overall masculine development.
Individuals have harsh voice pitch and under developed testis.
They are tall with long arms, feminine development (development of breast i.e. Gynaecomastia), and spermatogenesis does not occur, therefore, individuals are sterile.
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