Given that $X^h$ is the chromosome with the gene for haemophilia and $X$ is the chromosome with the normal gene. Which of the following individuals will act as a carrier for haemophilia?

If a colour blind woman marries a normal visioned man,their sons will be

Which of the following disorders can occur if the protein required for blood clotting is affected?

$A$ haemophilic man marries a normal woman. Their offspring will be:

$A$ normal girl, whose mother is haemophilic, marries a male with no ancestral history of haemophilia. What will be the possible phenotypes of the offspring?
$(a)$ Haemophilic son and haemophilic daughter.
$(b)$ Haemophilic son and carrier daughter.
$(c)$ Normal daughter and normal son.
$(d)$ Normal son and normal daughter.
Choose the most appropriate answer from the options given below:

What does the given symbol represent?