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Kaplan Qbank USMLE



Author4 Posts
  #1

If you are doing the kaplan qbank ....its in it.
i couldnt copy and paste the picture though.
i didnt understand how to differentiate between type of segregations looking at the chromosomal patterns????
please help!!

A 26-year-old woman and her 29-year-old husband have been trying to have a child for the last 3 years. During this time the woman has had 5 spontaneous abortions. The karyotypes of the mother, father, and the most recently aborted fetus all contained 46 chromosomes, and all pairs were normal except for the pairs shown above. The event that led to the child's abnormal karyotype was
A. adjacent I segregation
B. adjacent II segregation
C. alternate segregation
D. a recombination event within a paracentric inversion
E. a recombination event within a pericentric inversion

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  #2

7,12 pair has been given faulty!

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  #3

I'm not sure what the Q is but going by the little information given above my assumption is that the answer is D.

  #4

the answer given was adjacent 2 segregation.
it is from kaplan qbank only.
they have given explaination also.

but i wanted to know exactly how we differentiate adjacent 1 & 2 segregaton?

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