X-linked Diseases

Question 1

X-linked diseases

Answer 1

are genetic disorders caused by mutations in genes located on the X chromosome. Females have two X chromosomes, while males have one X and one Y chromosome.

Question 2

There are two main types of X-linked inheritance:

Answer 2

X-linked recessive: -most common type of X-linked inheritance.
-A male only needs one mutated copy of the gene to have the condition, because males only have one X chromosome.
-Females have two X chromosomes, so they need two mutated copies of the gene to have the condition.

X-linked dominant:
-X-linked dominant disorders are less common than X-linked recessive disorders.
-In X-linked dominant disorders, a female only needs one mutated copy of the gene to have the condition. Males with an X-linked dominant disorder will usually have symptoms that are more severe than those of females with the disorder.

Question 3

Hemophilia

Answer 3

a common X-linked recessive disorder that affects blood clotting. Males with hemophilia have a mutated gene on their X chromosome, leading to clotting problems