Bell Work 2/9/2015 In pea plants, round seeds (R) are dominant over wrinked seed (r). The Punnett square below sets up a cross between two parents that are heterozygous for round peas. Describe all possible phenotypes and genotypes for this cross.

Agenda 1. Bell Work 2. Word Wall: Word of the Day 3. Heredity/ Punnett Square BrainPop 4. Punnett Square Challenge, Part 2 5. Celebrity Genetics Work Time 6. Exit Ticket

Word Wall: Word of the Day kinetic: relating to the movement of physical objects

Group #1 Challenge In dogs, wire hair (W) is dominant to smooth (w). What is the percentage in a cross of a homozygous wire- haired dog with a smooth-haired dog?

Group #2 Challenge In rabbits, black fur is dominant to white fur. What are the percentages for a homozygous black rabbit and a homozygous white rabbit?

Group #3 Challenge In pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are heterozygous for seed shape, what ratio of the offspring should have spherical seeds?

Group #4 Challenge In fruit flies, red eyes are dominant to white eyes. What is the percentage for heterozygous fruit fly with a homozygous recessive fruit fly?

Group #5 Challenge In humans, pointed eyebrows are dominant over smooth eyebrows. What is the ratio for a homozygous woman with pointed eyebrows and a man with smooth eyebrows?

Group #6 Challenge In guinea pigs, smooth coat (S) is dominant over rough coat (s) and black coat (B) is dominant over white coat (b). What is the ratio for 2 rough coated guinea pigs?

Group #7 Challenge In tomatoes, red fruit (R) is dominant over yellow fruit. What will be the percentage of homozygous yellow tomato and a heterozygous tomato?

Group #8 Challenge Shaggy hair in dogs is dominant to its recessive allele, short hair. What is the percentage of 2 heterozygous dogs?

Genetics Project Directions: 1. You will need to choose one female and one male celebrity. 2. For each celebrity, you need to record the phenotype for the traits listed and pick a genotype. (For example, if Justin Bieber has blonde hair, the genotype would be “bb”. If Selena Gomez has brown hair, her genotype would be either “Bb” or “BB”.) 3. Create a Punnett square to express the possible offspring outcomes. 4. Record the trait the offspring will MOST LIKELY inherit. 5. Draw a picture depicting what the offspring should look like based on inherited traits.

Exit Ticket Create your own monohybrid Punnett Square cross word problem. Use the examples in your notes for ideas.