Reference no: EM133209614

This assignment is meant to help you practice Punnett Squares. Make Punnett squares for each cross listed below.

Part 1. Classic Dominant-Recessive Genetics - Traits to keep in mind: Polydactyly (R) is dominant to normal digits (r).

Highlight all words that are in bold - these are the genotypes of the parents! Be sure to list the potential genotypes and phenotypes of the offspring with their associated percentages.

1. If the mother is homozygous recessive and the father is homozygous dominant.

a. List the genotypes of the parents:

i. Father:

ii. Mother:

b. Write the genotype probabilities:

c. Write the phenotype probabilities:

2. If the mother is heterozygous and the father is heterozygous:

a. List the genotypes of the parents:

i. Father:

ii. Mother:

b. Write the genotype probabilities:

c. Write the phenotype probabilities:

3. If the mother is heterozygous and the father is homozygous dominant:

d. List the genotypes of the parents:

i. Father:

ii. Mother:

e. Write the genotype probabilities:

f. Write the phenotype probabilities:

Punnett Square Practice BIOS256 In-Class Activity

Part 2. Incomplete dominance - Traits to keep in mind: Black fur (BB), gray fur (Bb) and white fur (bb).

4. If the mother is heterozygous and the father is homozygous dominant.

a. List the genotypes of the parents:

i. Father:

ii. Mother:

b. Write the genotype probabilities:

c. Write the phenotype probabilities:

5. If the mother is heterozygous and the father is homozygous recessive:

g. List the genotypes of the parents:

i. Father:

ii. Mother:

h. Write the genotype probabilities:

i. Write the phenotype probabilities:

6. If the mother is heterozygous and the father is homozygous dominant:

j. List the genotypes of the parents:

i. Father:

ii. Mother:

k. Write the genotype probabilities:

l. Write the phenotype probabilities:

Punnett Square Practice BIOS256 Week 8 In-Class Activity

Part 3. Codominance - Traits to keep in mind: type A Blood: IA or IAi , Type O Blood: ii

Directions: Highlight all words that are in bold - these are the genotypes of the parents! Be sure to list the potential genotypes and phenotypes of the offspring with their associated percentages.

7. If the mother is type A blood and the father is Type O blood.

a. List the genotypes of the parents:

i. Father:

ii. Mother:

b. Write the genotype probabilities:

c. Write the phenotype probabilities:

8. If the mother is type A blood and the father is

Type O blood:

m. List the genotypes of the parents:

i. Father:

ii. Mother:

n. Write the genotype probabilities:

o. Write the phenotype probabilities:

Part 4. Sex-linked traits - Traits to keep in mind: unaffected (XAXA or XAY), carrier (XAXa), hemophilia (XaXa or XaY)

9. If the mother is heterozygous and the father is homozygous recessive.

a. List the genotypes of the parents:

i. Father:

ii. Mother:

b. Write the genotype probabilities:

c. Write the phenotype probabilities: