As it is an AR disease both the alleles should be present mother is minor and father is normal so no child will have major …if it wud have asked minor than 50%
Husband Is Normal and Wife Is T. Minor, As The Disease is Autosomal Recessive, Chance Of Normal Offspring is 50%, And T.Minor Is 50%, No Chance Of Thalassemia Major
Upto 3% means Normal…
And 3-8% means minor
Above 8% means major
So basically Rr* RR and in Punett Square no child will be having rr …so zero risk of having child with Thalassemia Major