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 ChallengeIn 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 TicketCreate your own monohybrid Punnett Square

cross word problem.

Use the examples in your notes for ideas.