Case Study 12-1
Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal analysis. The patient was a 40-year-old female with a history of miscarriages. Half of the 10-mL specimen was centrifuged, and the cell pellet was resuspended in methanol fixative. The remaining cells were resuspended in growth medium with phytohemagglutinin (PHA). Two days later, colcemid was added to the cell culture. The cells were harvested in hypotonic saline, fixed in methanol, and spread on slides for examination. The results of the karyotype analysis indicated that all cells examined contained 47,XXY.
normal number of chromosomes is 46, if the child is female 2 X chromosomes are found and if the child is male one X chromosome and one Y chromosome are present.
given that baby is a boy and there are three sex chromosomes one Y chromosome and 2 X chromosomes.
Turners syndrome, there is only one X chromosome.
Klinefelter syndrome, there are two X chromosome and one Y chromosome.
so the answer is d) Klinefelter syndrome
Case Study 12-1 Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal...
Case Study 12-1 Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal analysis. The patient was a 40-year-old female with a history of miscarriages. Half of the 10-mL specimen was centrifuged, and the cell pellet was resuspended in methanol fixative. The remaining cells were resuspended in growth medium with phytohemagglutinin (PHA). Two days later, colcemid was added to the cell culture. The cells were harvested in hypotonic saline, fixed in methanol, and spread on slides for...
Case Study 12-1 Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal analysis. The patient was a 40-year-old female with a history of miscarriages. Half of the 10-mL specimen was centrifuged, and the cell pellet was resuspended in methanol fixative. The remaining cells were resuspended in growth medium with phytohemagglutinin (PHA). Two days later, colcemid was added to the cell culture. The cells were harvested in hypotonic saline, fixed in methanol, and spread on slides for...
Case Study 12-1 Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal analysis. The patient was a 40-year-old female with a history of miscarriages. Half of the 10-mL specimen was centrifuged, and the cell pellet was resuspended in methanol fixative. The remaining cells were resuspended in growth medium with phytohemagglutinin (PHA). Two days later, colcemid was added to the cell culture. The cells were harvested in hypotonic saline, fixed in methanol, and spread on slides for...
Case Study 12-1 Amniotic fluid was received in the cytogenetics laboratory with a request for chromosomal analysis. The patient was a 40-year-old female with a history of miscarriages. Half of the 10-mL specimen was centrifuged, and the cell pellet was resuspended in methanol fixative. The remaining cells were resuspended in growth medium with phytohemagglutinin (PHA). Two days later, colcemid was added to the cell culture. The cells were harvested in hypotonic saline, fixed in methanol, and spread on slides for...