Which of the following is not a genetic disorder?

With the help of the given pedigree,find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in the $F_3$ generation.

$A$ girl of normal vision whose father was colourblind marries a man of normal vision whose father was also colourblind. What percentage of their sons would be colourblind?

Select the incorrect statement with regard to haemophilia.

In man,albinism is due to the non-synthesis of melanin in the absence of:

Which autosome-linked disease is related to the following pedigree analysis?