Question

33. In Huntington’s disease, the unaffected persons are homozygous for normal allele h. The following is erroneous because
(a) it shows both male and female affected by Huntingtons disease (b) either person 6 or 7 should have the disease, if individual 11 shows the disease. (c) at least one of the 2 children (8, 9) should have the disease (d) all of these

Answer 1

(b) Since the  offspring  number  11 is  affected (diseased)  either  of  the  two  parents  6  or  7 have to be affected.