1. Genetics Problems Review: Please take out a blank piece of paper!

2. Complete Dominance Freckles (F) are dominant over no freckles (f). 1)What is the genotype for a person with homozygous freckles? 2)What is the genotype for a person with heterozygous freckles? 3)What is the genotype for a person with no freckles? 4)Draw a Punnett Square to show all possible offspring for the following parents: Ff x ff

3. Incomplete Dominance Curly hair (C) is incompletely dominant over straight hair (c). Individuals that are heterozygous end up with wavy hair. 1)What is the genotype for a person with curly hair? 2)What is the genotype for a person with straight hair? 3)What is the genotype for a person with wavy hair? 4)Draw a Punnett Square to show all possible offspring for the following parents: CC x cc

4. Codominance Type A blood (I A ) and Type B (I B ) blood are co-dominant to each other Type A blood and Type B blood are each dominant over Type O blood (i). 1)What is the genotype for a person heterozygous for blood type A? 2)What is the genotype for a person with blood type O? 3)What is the genotype for a person homozygous for blood type B? 4)Draw a Punnett Square to show all possible offspring for the following parents: I A I B x ii

5. Sex-linked Colorblindness is on the X chromosome and recessive (X n ). Remember, females are XX and males are XY. 1)What is the genotype for a male with color blindness? 2)What is the genotype for a female that is homozygous normal? 3)What is the genotype for a female that carries the color blind gene? 4)Draw a Punnett Square to show all possible offspring for the following parents: X N X n x X n Y