NonNBME Qn - samideb12

[ArchivalUser]

Examination of an aborted fetus shows mature fetal tissue that contains barr bodies.Which of the following is the most likely genotype of the fetus?
A.45,X
B.Edward syndrome
C.Klenfelter syndrome
D.Normal male (46,XY)
E.XYY syndrome

[ArchivalUser]

cc

[ArchivalUser]

i guess b

[ArchivalUser]

C..XXY.....or XXXY..

[ArchivalUser]

Yes ,there should be more than one x chromosome for inactivation and barr bodies to occur and CC is the correct answer

[ArchivalUser]

What about Edward syndrome in a female fetus? What is this excluded? Usually these fetuses are more commonly aborted than Kleinefelter syndrome.

Could you please comment?

@samideb12, thank you so much for posting all these questions. AWESOME JOB!!

[ArchivalUser]

The presence of barr bodies is due to x-inactivation and at least two X's should be there for these process to occur and only CC fulfills the criteria.samideb