Question

15
Read the following and answer the questions given below.
Haemophilia shows its transmission from unaffected carrier female to some of the male
progeny. In this disease a single protein that is a part of the cascade of proteins involved
in the clotting of blood is affected. Due to this in an affected individual a simple cut will
result in non-stop bleeding. The heterozygous female (carrier) for haemophilia may
transmit the disease to sons. The possibility of female becoming a haemophilic is
extremely rare because mother of such a female has to be at least carrier and father should
be haemophilic (unviable in the later stage of life). The family pedigree of Queen
Victoria shows a number of haemophilic descendants as she was the carrier of the
disease.
1. Haemophilia is a/an
disease
a) Sex linked recessive.
b) Autosomal Dominant.
c) Autosomal Recessive.
d) Sex linked Dominant.
2. Which of the following most appropriately describes haemophilia?
a) Chromosomal disorder
b) Dominant gene disorder
c) Recessive gene disorder
d) X-linked recessive gene disorder.
3. Haemophilic man marries a normal woman. Their offspring's will be
a) All haemophilic.
b) All boys haemophilic.
c) All girls haemophilic.
d) All normal.​

Answer 1

sorry I didn't know the answer

Answer 2

Answer:

a) Sex linked recessive.

d) X-linked recessive gene disorder.

d) All normal.