CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
254
You visited us 254 times! Enjoying our articles? Unlock Full Access!
Question

The 'Christmas disease' patient lacks antihaemophilic

A
Homogentisic acid oxidase
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Factor VIII
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Factor XI
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Factor IX
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Factor IX

Hemophilia is an inherited bleeding disorder characterized by lacking or low levels of clotting factors resulting in the inability or impaired ability of blood clotting. Hemophilia A is caused by a deficiency of clotting factor VIII. Hemophilia B is also known as Christmas disease and is caused by a deficiency of clotting factor IX. Hemophilia C is caused by a deficiency of Factor XI blood clotting factor. Alkaptonuria is a genetic disorder which imparts inability to process the amino acids phenylalanine and tyrosine. Mutation in the HGD gene that codes for the enzyme homogentisate 1,2-dioxygenase is the cause of this disorder. A person homozygous for mutated allele accumulates an intermediate substance called homogentisic acid in the blood and tissues. The correct answer is "D".


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Sex Linked Inheritance in Humans
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon