In humans, normal color vision (N) is dominant over color blindness (n). A man and woman with normal color vision produced two colorblind sons and two daughters with normal vision. Choose from the diagram the correct parental genotypes. 1. XNY and XNXN 2. XNy and XNXn 3. xny and XNXN 4. Xhy and xnxn Submit Answer Hide Toolbar
If both of the parents are healthy , they have children who suffer from the disease and the disease is X-linked that means the mom is a carrier for the gene.
that means the parental genotypes are 2.XNy and XNXn
