Why was haemophilia called the royal disease?

A. यह European royal families में inherited रूप से देखा गया / It was seen as inherited in European royal families

Step 1: Identify genetic disorder. Step 2: Haemophilia is an X linked disorder and its inheritance was historically seen in royal families. Step 3: Remember haemophilia equals X linked bleeding disorder.

Step 1: genetic disorder पहचानें। Step 2: Haemophilia एक X linked disorder है और इतिहास में royal families में इसका inheritance देखा गया था। Step 3: Haemophilia equals X linked bleeding disorder याद रखें।