Why is hemophilia more common in males than in females?

Question

Also:

How does sickle-cell trait differ from sickle-cell disease?

What are the 2 types ofn selective breeding, and how do they compare?

Answer 1

The gene for the most well known type of hemophilia is carried in humans on the X chromosome. Each X has a copy of the gene for hemophilia. Since males are XY and females are XX, males only get one type of copy of the gene. If it's a bad copy, they have no second chance. Females on the other hand get 2 chances with this one. If they get one bad copy and one good copy, the good copy covers for the bad one. They have to have 2 bad copies of the gene to have hemophilia.

I think sickle-cell is similiar, but in this case a good copy can't cover as well for the bad copy.

Sickle Cell Trait Versus Anemia

The condition called sickle cell trait is different from sickle cell anemia. A person with sickle cell trait does not have the disease but carries the gene that causes the disease. People with sickle cell trait can pass the gene on when they have children. For more information on sickle cell trait, see the section on What Causes Sickle Cell Anemia.

Answer 2

Hemophilia is x-linked recessive, so if a male is a carrier, it will expressed, because he only has one x chromosome, whereas females have 2 x chromosomes, so they will only get hemophilia if both alleles have that gene.

Sickle cell trait means you carry the gene on one chromosome, and are phenotypically normal (though sickle cell carriers are known to be less susceptible to malaria). Sickle cell disease means you're homozygous- you carry both alleles and you phenotypically express the disease

The two types of selective breeding are natural - individuals choose mates based on personal preferances and artificial - mates are chosen for animals in order to develop a cultivated breed.

Answer 3

I'm sure there are more answers, but one reason is that the gene for hemophilia is carried by the "Y" chromosome, which is a distinctly male feature.

Answer 4

because God is a menstruating *****