imagine you are a genetic couselor working with a couple who have just had a child who is suffering from tay-sachs disease. neither paretn has been testd for tay-sachs dosease nor have there been any previous cases of tay-sachs in either family. explain tay-sachs disease and provide a discussion of the information you would share with the couple about tay-sachs and possible implications for future children. 250-500 words apa format and cite references