Posted by Jared on December 14, 1999 at 13:17:56:
In Reply to: 1 brown eye 1 blue eye ? posted by Lynne Romney on April 16, 1999 at 17:29:00:
I believe it is an example of mocaicism, and occurence in which the cells of an organism have two distinct genotypes. It could be caused by a mutation in the early cell divisions from zygote to morula.
Another possible but less likely cause is imprinting, in which one of the two copies of a gene become inactive. Which copy is shut off is determined by chance, so the cells which go on to produce the blue eye could have different active alleles from the brown.
: Hi,
: Can anyone tell me the genetics works when a person
: has one brown eye and one blue eye?
: Thanx :)