A couple has just been informed that one of them has Huntington's disease, and that the other spouse does not have a disease allele. With this information, what is the chance that at least one of their two young children has a disease allele?
◦ the chance that at least one of the unaffected children has a disease allele is 75%
◦ the chance that at least one of the unaffected children has a disease allele is 0%
◦ the chance that at least one of the unaffected children has a disease allele is 25%
◦ the chance that at least one of the unaffected children has a disease allele is 50%
◦ the chance that at least one of the unaffected children has a disease allele is 100%