Why didn't charles edward, the grandson of queen victoria, receive hemophilia from his father leopold? because helena does not c
arry the trait because the disease is not carried on the "y" chromosome because helena carries the trait but it is not homozygous because the disease is not on the "y" chromosome and helena did not have the trait?
2 answers:
Answer:
Charles Edward didn't receive hemophilia from his father leopold because the disease is not carried on the Y chromosome and Helena didn't have the trait. Hemophilia is carried on the X chromosome this is the reason which this disease is very rare in women as compared to men. Women can be a carrier for this disease if her son receives the affected copy of the X chromosome then the son will have hemophilia and Y chromosome from father wont be able to compensate as it doesn't carry the gene. However if the women has a daughter and she receives the affected X chromosome from her mother then her father can compensate her with his X chromosome since it carries the relevant gene. The only possibility in which a women can be affected is the case in which both her mother and father suffer from hemophilia and they donate the affected genes.
Explanation:
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