-Red-green color blindness is passed from the mother to son on the twenty-third chromosome.

-Opsin (OPN4)
-The L-Opsin gene is not being produced, resulting in colorblindness.
-Opsins transmit signals from light to become visual images.
-When a working copy of this protein is not produced, the colors red and green look exactly the same.

Gene- Linked recessive due to deletion (nucleotide) mutation

Genetic info.