Your sister died from tay-sachs disease, inherited as a recessive allele (t). you're
married and planning to start your family. you're worried about the disease and
decide to have genetic testing to see if you or your spouse is a carrier of the tay-sachs
allele. the test results show that you're a carrier of the allele, but your spouse isn't.
what is the probability that you and your spouse will have a child with tay-sachs
disease? show your work.