Genes (not Jeans!) Part 3: Punnett Square Intro PowerPoint created by sfalwell, permission granted for teachers to use if they include link to

Mendel determined that some traits are _____________ and show up more often, while some traits are ______________ and seem to hide or skip generations. dominant recessive What do you know about Mendel’s experiments? Why is he called the Father of Genetics?

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? Sneak peak! A look at what’s ahead 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 ExplanationPunnett Square

using Punnett Squares Let’s explain Mendel’s Pea Plant Experiment TT t t Tt T T T t tt Tt

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.Read and Translate the word problem 2.Draw Punnett Square 3.Fill in the Punnett Square for the potential offspring. 4.Answer the question.