Step 6
Beirt is not sure if she has a preference for a certain eye colour. Though at this point she thinks it will not be a part of the choice she has to make, she still asks you to make some calculations.
A Zokky's eye colour is caused by protein g. The gene responsible for this protein knows two X-chromosome bound (X-linked) alleles: XB causes the iris to be blue in shade like all three of these Zokky's have, Xb gives amber coloured iris. Beirt is heterozygous for the allele.
Duine carries a rare allele on his Y chromosome that cancels out the effect of any dominant alleles: The iris will get a very light shade of grey in male offspring when the Y chromosome is activated in the presence of these alleles.
Beirt's question is: “What is the chance that a male child will get blue eyes?” Calculate this chance for both potential partners.
A Zokky's eye colour is caused by protein g. The gene responsible for this protein knows two X-chromosome bound (X-linked) alleles: XB causes the iris to be blue in shade like all three of these Zokky's have, Xb gives amber coloured iris. Beirt is heterozygous for the allele.
Duine carries a rare allele on his Y chromosome that cancels out the effect of any dominant alleles: The iris will get a very light shade of grey in male offspring when the Y chromosome is activated in the presence of these alleles.
Beirt's question is: “What is the chance that a male child will get blue eyes?” Calculate this chance for both potential partners.