Which of the following most appropriately describes haemophilia?

Which of the following conditions,although harmful,provides resistance against infectious diseases spread by mosquitoes?

When a hemophilic male $(X^h Y)$ marries a carrier female $(X^H X^h)$ for hemophilia,what are the chances of all daughters born being normal (in $\%$)?

If a man who is colour blind marries a woman who is pure normal for colour vision,the chances of their sons having colour blindness is

$A$ man with normal vision whose father was colourblind marries a woman whose father was also colourblind. Suppose their first child is a daughter,what are the chances of this child being colourblind (in $\%$)?

$A$ colour blind man marries a female with homozygous normal vision. What will be the possibility of colour blindness in their male children?