As explained in this eMedTV segment, a mutation in the F8 gene causes hemophilia A, while a mutation in the F9 gene is responsible for hemophilia B. This article covers these genes in more detail and discusses how hemophilia is inherited.
To forward a text message on an iPhone running the iOS 8 operating system, open the conversation thread, select an individual message and then use the Share feature to send the message to one or more of your contacts.
Open the Messages app, then select the conversation that you want to forward. Tap the Edit button, select the messages you want to print, then tap the Forward button at the bottom of the screen. Send them to an email address.