1. WHAT IS LOCATED ON THE CHROMOSOME?A. CELLULAR ORGANELLESB. HEREDITARY AND GENETIC INFORMATIONC. INSTRUCTIONS FOR CELL ACTIVITIES D. ENZYME MATERIALS 2. WHICH OF THE PICTURES BELOW SHOWS A TRAIT THAT IS NOT INHERITED BY OFFSPRING?

Bell Work 2/6/15

OBJECTIVESDescribe the relationship among genes, chromosomes, and inherited traits. (SPI 0707.4.3)

Interpret a Punnett square to predict possible genetic combinations passed from parents to offspring during sexual reproduction. (SPI0707.4.4)

PUNNETT SQUARE CHALLENGE Each group has two different Punnett

Square Challenges in their colored folders. For each challenge you must create and interpret a Punnett square to predict possible genetic combinations passed from parents to offspring during sexual reproduction.

The following must be written on a loose leaf sheet of notebook paper: 1. Crossed Punnett square2. All possible genotypes and phenotypes of

offspring3. The answer to the question (percentages,

ratios, etc.)4. You and your team have 5 minutes. When you

are finished, work on Science Art.

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 CHALLENGEIn 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 CHALLENGEIn 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 CHALLENGEIn 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 CHALLENGEIn tomatoes, red fruit (R) is

dominant over yellow fruit. What will be the

percentage of homozygous yellow tomato and a

heterozygous tomato?

GROUP #8 CHALLENGEShaggy 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.