Genes (not Jeans!) Part 3: Punnett Square Intro PowerPoint created by sfalwell, permission granted for teachers to use if they include link to http://comelearnmore.com/ What do you know about Mendel’s experiments? Why is he called the Father of Genetics? Mendel determined that some traits are dominant _____________ and show up more often, recessive while some traits are ______________ and seem to hide or skip generations. Genetics Word Problem: Brown eyes are dominant to blue eyes. If mom has a heterozygous genotype and dad has a homozygous recessive phenotype, what is the probability of offspring with blue eyes? Translation: Since Mrs. F’s mom had brown eyes and her dad had blue eyes, figure out the chances that Mrs. F (or her brothers and sisters) would end up with blue eyes. 6 Key Terms 1)Dominant 2)Recessive 3)Genotype 4)Phenotype 5)Homozygous 6)Heterozygous Frayer Model Using Quizlet for Vocabulary Review Set up the next page of your notebook like this Picture Explanation Punnett Square Let’s explain Mendel’s Pea Plant Experiment using Punnett Squares T T t Tt Tt t Tt Tt T t Gregor Mendel’s Punnett Square Video Genetics Word Problem #1: Brown eyes are dominant to blue eyes. If mom has a heterozygous genotype and dad has a homozygous recessive phenotype, what is the probability of offspring with blue eyes? How to do Punnett Squares We will use Punnett Square Word Problems Set Up #1 in your interactive notebook to work through this problem. 1. 2. 3. 4. Read and Translate the word problem Draw Punnett Square Fill in the Punnett Square for the potential offspring. Answer the question.