Please observe the following pedigree and come up with a conclusion as to which type of inheritance is most likely
Now it should be obvious that it's either autosomal dominant or autosomal recessive. BUT it could also be X-recessive if the women I2 and II5 are carriers.
Anyways, if it's autosomal dominant than about 50% of children should be sick according to a punnet square.
If autosomal recessive about 25% should be sick according to the same logic.
33% of children are sick so what do you answer? My book states a very clear and only answer without explaining how it could be other forms too, autosomal dominant. Why not autosomal recessive just as likely?