1. May 4, 2011 1.What is an allele?

2. Genotype: genetics of trait (what alleles?) Homozygous: two copies of the same allele –Homozygous dominant (BB) –Homozygous recessive (bb) Heterozygous: one dominant, one recessive allele –Bb

4. Phenotype: physical characteristic (what you SEE) Genotype of BB gives a phenotype of brown eyes Genotype of bb gives a phenotype of blue eyes Genotype Bb gives phenotype of brown eyes

5. How can you predict what trait a child will have? Punnett Square

6. Recessive Homozygous Dominant Alleles Genetics Homozygous Recessive Genotype Heterozygous Phenotype Dominant Mendel Human Genome Project Punnett Square Homozygous Genes Words for back of HW (Can be used more than once!)