1. Probability and Heredity Students will be able to Demonstrate understanding of probability Assess and use Punnett Squares

2. Mind Map Gregor Mendel

3. What is the chance? If you toss a coin 20 times… How many times will it land with heads up? How many times will it land tails up? Pair up One person toss chip 20 times Other person records results Class Data 84

4. Coin Toss

5. Probability Probability (P) is a number that describes how likely it is that an event will occur. Formula P = Number of times an event can occur Total number of possible events Examples 84

6. Independent Events Each event occurs separately (past does not matter) 85

7. Mendel’s Peas Coin Cross Pair up Each student tosses white chip. Record result of 20 tosses How many plants will be tall how many short? Remember TT = Tall Tt = Tall tt = Short 78

8. Pea Traits

10. Hybrid Round Pea R = Roundr = Wrinkled R r R R r R R r R r r r 87

11. Guinea Pig Black (BB) White (bb) B B b B B b b b B b B b 87

12. Terminology Phenotype What the organism looks like Genotype What the actual genes are One from each parent If both alleles are the same = Homozygous If each allele is different = Heterozygous 88

13. Codominance When neither allele is dominate 89

14. Question of the Day Perform a genetic cross using a heterozygous pea (Rr) and a homozygous recessive pea (rr). Tell me what all of the possible phenotypes and genotypes are for this cross.