Off topic:I want to check if a disease is heritable and what is the chance that the offspring will have the same disease in near future .

Question

[Being Bioinformatician]

Respected Members,

I want to check if a disease is heritable and what is the chance that the offspring will have the same disease in near future.

Which procedure should I follow (RT-PCR or PCR-RFLP or any other procedure )... I need some protocol

Thanks for Help in advance!