1. Monohybrid Problems

2. General Rules to solving genetic crosses using Punnett Squares. 1. Make key 2. Write Parent Genotypes 3. Perform cross using square 4. Write Genotype and Phenotype ratios 5. Be sure to answer any additional questions.

3. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? Problem

4. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 1)Make a key: Dominant: Recessive: Genotype? Phenotype? Genotype?

5. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 2) Write Parent Genotypes Parent 1: Parent 2: Genotype? Phenotype? Genotype?

6. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 3) Perform Cross Using Square ______ X ______ Parent 1Parent 2

7. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 3) Perform Cross Using Square

8. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 4) Write Genotypes and Phenotypes and Ratios Genotypes - Ratios

9. 1.In rabbits the allele for black coat color (B) is dominant over the allele for brown coat color (b). What is the genotypic ratio and phenotypic ratio for a cross between an animal purebred for black coat color and one purebred for brown coat color? What is the probability of having the next baby rabbit with a black coat? 5) Be sure to answer any additional questions What is the probability of having the next baby rabbit with a black coat? a) 0/4 (o%) b) 1/4 (25%) c) 2/4 (50%) d) 3/4 (75%) e) 4/4 (100%)

10. General Rules to solving genetic crosses using Punnett Squares. 1. Make key 2. Write Parent Genotypes 3. Perform cross using square 4. Write Genotype and Phenotype ratios 5. Be sure to answer any additional questions.