Find the $ODD$ one out,with respect to $X$-linkage.

Galactosemia in children can be treated by providing which of the following?

The pedigree chart given below shows a particular trait which is absent in parents but present in the next generation irrespective of sexes. Draw your conclusion on the basis of the pedigree.

Sickle cell anemia cannot be eliminated from the African population because ........... .

An albino father's daughter marries an albino man. What will be the ratio of their offspring?

If a colour blind man marries a woman who is homozygous for normal vision,the probability of their son being colour blind is ......... (in $\%$)