Hemophilia is passed down from mother to son. It is extremely
rare for a woman to have hemophilia. It is necessary, though, for
a woman to be a carrier of the disorder for her son to acquire this
disorder. Females have two X chromosomes whereas males only
have one. When a boy is born, he takes one X chromosome from
his mother and one Y chromosome from his father. Therefore, he
can only get hemophilia through his mother.
Example One:
Mother(Carrier)+Father(Non-Affected)=50% chance of their son
acquiring the disorder and 50% chance of their daughter being a
carrier.
Example Two:
Mother(Non-Affected)+Father(Hemophiliac)=All sons will be
non-affected and all daughters will be carriers.
Classical hemophilia is a sex-linked genetic mutation that is passed from mother to son.
Hemophilia is not contagious by any means, however it can be passed from parent to offspring in the way of genetics.
It is inherited.
Hemophilia
Transmitted by a dominant gene. If that gene is inherited from either parent, the offspring will develop HD. If the gene is NOT inherited, then the offspring will not have HD- AND cannot pass the gene to their offspring.
Recessive?? (i.e., you would need to inherit one from each parent to have hemophilia)
Hemophilia is sex linked. Males inherit from their mother, daughters are carriers if the defective gene is inherited from one of either parent. A female must inherit two copies of the defective allele to have hemophilia .
X*X and XY
Yes- it is transmitted from parent to child by a chromasome.
HIV is a sexually transmitted disease.
Literally love of blood. Congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son. It is a genetic disorder in which a per son's blood clots very slowly or not at all.
Your parents. It is a genetically transmitted disease- you do not catch it, you inherit it from a parent.
It is transmitted genetically, from parent to child (via DNA sequences).