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.
OS X Mail: Select Forward message in the Perform the following actions drop-down, enter your SMS address in the to text box, add a message (if you wish), and click OK. Finally, choose either Apply or Don't Apply. Create an OS X Mail rule that forwards mail from a particular address to your phone as a text message.