On which chromosome of each parent is the gene controlling $\beta$-thalassemia located?

If all the sons are haemophilic and all the daughters are normal when a haemophilic father mates with a normal mother,this character is:

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.

Which of the following diseases results from the genetic inability to synthesize a single enzyme?

$A$ colorblind man marries a woman who is the daughter of a colorblind father. What will be the status of their offspring regarding colorblindness?

$A$ color-blind woman marries a man with normal vision. In their offspring,.........