Genetic transmission of hemophilia.
(A) "Normal" male and female with trait
XY
X*X*YX*Y
XXXXY


1:4 chance will be female with trait.
1:4 chance will be male with hemophilia.
1:2(or 2:4) chance will be "normal" female/male.
(B) Male with hemophilia and "normal" female
X*Y
XXX*XY
XXX*XY


1:2(or 2:4) chance will be female with trait.
1:2(or 2:4) chance will be "normal" male.
(D) Male with hemophilia and female with trait
X*Y
X*X*X*X*Y
XX*XXY


1:2 (or 2:4) chance will be female with trait.
1:4 chance will be normal male.
1:4 chance will be male with hemophila.
KeyXY= normal male
X*Y= male with hemophila
XX= normal femalex
X*X= female carrying hemophilia trait
X*X*= female with possible relative lack of
clothing factor - not a true himophiliac
(von Willebrand's disease).




Note: The odds cited here are for each pregnancy