1. Phenotype and Genotype Phenotype- phenotype is the physical appearance of an organism Genotype- genotype is the observable or biochemical characteristic of an organism, which is determined by the genes Ratios- 3NORMAL: 1 ALBINISM Percentages- 75% NORMAL: 25% ALBNISM Ratios- 1AA: 2Aa: 1aa Percentage-25%AA: 50%Aa: 25%aa

2. Punnett Square Practice Genotype: Ratio: 1 Aa: aa Percentage: 50%Aa: 50%aa Phenotype: Ratio : 1NORMAL: 1ALBINISM Percentage: 50% NORMAL: 50% ALBISNISM

3. 3 Generation Pedigree White= they do not have any genes of it or they have 1 gene, but since it is recessive, the normal gene is dominant so they do not have the disease Black= both genes of albinism were passed down so the child has albinism.

4. Extra Practice Circle=female Square=male Shaded in=albinism White=normal Questions: 1.Why did the children of the third generation on the left side have albinism? 2.Why didn’t the child of the third generation on the right side have albinism? 3.How much influence did the spouses have for the 3 generation children to have albinism?