Heredity Test Review Name: _______________ Define: Heterozygous/hybrid: ________________________________________________________________________ Homozygous/purebred/true-breeding: ___________________________________________________________ Genotype: ________________________________________________________________________________ Phenotype: ________________________________________________________________________________ Dominant: _________________________________________________________________________________ Recessive: ________________________________________________________________________________ 1. In humans, dimples are a dominant trait. Cross a woman with no dimples with a man who has dimples, but his mother has no dimples. Show all possible genotypes, phenotypes, and their percentage. Genotype Phenotype Define: Incomplete dominance: ___________________________ ________________________________________________ Codominance: ___________________________________ ________________________________________________ 2. Poofkins come in red, blue, and purple. Write the correct genotype for each color if R represents a red gene and B represents a blue gene. Red: _____ Blue: _____ Purple: _____ 3. What would happen if Spongebob crossed a Poofkin with red flowers with a Poofkin with blue flowers. A. How many of the plants would have red flowers? ______% B. How many of the plants would have blue flowers? ______% C. How many of the plants would have purple flowers? ______% ©STEM Strength 4. Three children recently born in a hospital were accidentally mixed up. The blood types of the parents involved are given along with the blood types of the infants. Determine which baby belongs with which parents and explain your reasoning. Parents #1 – Type A and B Parents #2 – Type O and AB Parents #3 – Type B and O Baby X – Type A Baby Y – Type O Baby Z – Type AB Baby X belongs to Parents # _____ because _____________________________________________________ Baby Y belongs to Parents # _____ because _____________________________________________________ Baby Z belongs to Parents # _____ because _____________________________________________________ Define: Sex linked traits: ___________________________________________________________________________ __________________________________________________________________________________________ 5. In cats, black coat (B) is codominant with yellow (b). The coat color gene is on the X chromosome. Calico cats, which have coats with black and yellow patches, are heterozygous for the coat color allele. A. Why are most calico cats female? ___________________________________________________________ B. A calico female, Pickle, had a litter with one yellow male, two black males, two yellow females, and three calico females. What are the genotypes and phenotypes of the father cat? Genotype: ____________ Phenotype: ____________ 6. Solve a Punnett square for the following cross: AaBb x aaBb ©STEM Strength Define: Pedigrees : _______________________________________________________________________________ __________________________________________________________________________________________ 8. Determine which pedigree represents an autosomal recessive trait, and which is autosomal dominant. Answer: _________________________________________ Answer: __________________________________ Explain how you knew: _____________________________ Explain how you knew: ______________________ ________________________________________________ _________________________________________ ________________________________________________ _________________________________________ ©STEM Strength Thanks for downloading this resource! I hope it made your day a little easier! If you liked this review, check out the Unit Test covering the same material. Also, don’t forget to follow my store! Connect with me!