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Name: Wanda
Status: Educator
Age: 50s
Location: N/A
Country: N/A
Date: August 2004


Question:
When I was doing my clinical training in 1976, I recall reading an article about a person of Polish descent having both AB antigens on only one allele.Do you have any knowledge of this case?r



Replies:
I haven't heard of this particular case, but it sounds like a case of unequal crossing-over during meiosis whereby one chromatid ends up with a duplication of this chromosome locus (thus carrying both alleles) and the other chromatid with a deletion of this locus.

Regards, Ron Baker, Ph.D



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