AP BIOLOGY

HEREDITY

THE PEDIGREE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What genetic disorder is when a person’s blood clots very slowly or not at all?
A
Down Syndrome
B
Hemophilia
C
Cystic Fibrosis
D
Sickle-Cell
Explanation: 

Detailed explanation-1: -Hemophilia is a rare disorder in which the blood doesn’t clot in the typical way because it doesn’t have enough blood-clotting proteins (clotting factors). If you have hemophilia, you might bleed for a longer time after an injury than you would if your blood clotted properly.

Detailed explanation-2: -What is Hemophilia? Hemophilia is usually an inherited bleeding disorder in which the blood does not clot properly. This can lead to spontaneous bleeding as well as bleeding following injuries or surgery.

Detailed explanation-3: -Causes. Variants in the F8 gene cause hemophilia A, while variants in the F9 gene cause hemophilia B. The F8 gene provides instructions for making a protein called coagulation factor VIII. A related protein, coagulation factor IX, is produced from the F9 gene.

Detailed explanation-4: -Factor V Leiden thrombophilia is an inherited disorder of blood clotting . Factor V Leiden is the name of a specific gene mutation that results in thrombophilia, which is an increased tendency to form abnormal blood clots that can block blood vessels.

There is 1 question to complete.