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

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.

answer; cnidarians;