Thank you for reporting, we will resolve it shortly
Q.
In Klinefelter's syndrome, the sex chromosome compliment is :
BHUBHU 2006
Solution:
Klinefelter's syndrome is a human sex abnormality, arises due to non-disjunction of sex chromosomes during meiosis. It is characterised by the chromosome number. $ 2n=47, $ the chromosomal formula is $ \text{44}\,\text{A}\,\text{+}\,\text{XXY}\text{.} $ Klinefelter's syndrome is a male in general appearance; testes are underdeveloped, enlarged breast (gyneco mastia), Mentally defective and abnormally tall. Mental retardation increases with X complement. The karyotypes of extreme Klinefelter's syndrome are $ \text{44}\,\text{A}\,\text{+}\,\text{XXXY}\text{.} $ $ \text{44}\,\text{A}\,\text{+}\,\text{XXXXY,} $ $ \text{44}\,\text{A}\,\text{+}\,\text{XXXYY,} $ etc. In Turner syndrome, chromosome number is $ 2n=45. $ The chromosomal formula is $ \text{44}\,\text{A}\,\text{+}\,\text{XO}\text{.} $ She is a sterile female. $ \text{22}\,\text{A}\,\text{+XY} $ is chromosome constitution of normal male individuals which are heterogametic. $ \text{22}\,\text{A}\,\text{+XX} $ is chromosome constitution of normal female individuals, are homogameric.