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

Which one is a sex-linked disease?

Albino condition is found in which human race?

Given below are the two statements.
Statement $I$: Widow's peak is determined by an autosomal dominant gene.
Statement $II$: Heterozygous individuals have a straight hairline.
In the light of the above statements,choose the correct answer from the options given below:

$A$ normal woman,whose father was colorblind,marries a normal man. What will be the status of their sons?

Haemophilia is a type of genetic disorder that is: