Question

Haemophilia is
A. X-linked
B. Y-linked
C. Z-linked
D. Autosomal

Answer 1

Hint:
Haemophilia is a disorder that leads to insufficient production of blood proteins known as heme. Heme is essential for the growth and function of red blood cells, so without it, people with haemophilia would experience severe bleeding episodes. The most common form of haemophilia is inherited in an autosomal recessive manner, which means that you need two defective copies of the gene in order to have the condition.

Complete answer:
A sex-linked recessive condition, haemophilia. The X chromosome is home to the haemophilia-causing defective gene. Males have a single X and a single Y chromosome.
The most common form of haemophilia is inherited in an autosomal recessive manner, which means that you need two defective copies of the gene in order to have the condition. However, other forms are also classified under haemophilia such as mild or classic haemophilia patients who do not require regular infusions but still benefit from medications and treatments designed specifically for them.
So, Haemophilia is said to be X-linked.
A hereditary bleeding disorder that causes uncontrolled blood clots. Hemophilia A is an X-linked condition, which is passed down in families through the male line. Hemophilia B is a less common form of the disorder that can be inherited either way.

Option ‘A’ is correct

Note:
Due to the fact that males only have one X chromosome, haemophilia is a hereditary condition that is X-linked and recessive in nature. Females are typically carriers since they have an extra X chromosome, however, heterozygous carriers frequently exhibit haemophilia symptoms.