Look at the pedigree chart above. The squares are the male members of the family, and the circles are the female members of the family. Squares or circles that are all black are nearsighted members. Squares or circles that are all white have normal vision. Squares or circles that are part black are family members who carry the gene for nearsightedness but are not nearsighted. How many individuals in Generation II of the family have the gene for nearsightedness?
