Objective The students will write a geneotype for each person.
Pedigree for Nearsightedness
A pedigree is a diagram showing the phenotype for a certain group of related organisms. Scientists use pedigree; to help them figure out the genetypes of an organism. The pedigree below shows a trait carried through a family. The squares represent males; the circles represent females. In this pedigree, the recessive trait for nearsightedness, or myopia, is shown. The shaded areas show a person who has both recessive genes for nearsightedness. On the line below each person, write his or her geneotype. Let N = dominant gene for normal vision and n = recessive for nearsightedness.
(figure available in print form)