1. Half Day Review

2. Black fur in guinea pigs is dominant over white fur
Black fur in guinea pigs is dominant over white fur. If a black fur guinea pig mates with a white fur guinea pig what would be the phenotypes and genotypes of the offspring? Find the probability of a black offspring in a cross.

3. In humans, brown eyes are dominant over blue
In humans, brown eyes are dominant over blue . A brown-eyed man marries a blue-eyed woman and the 4 children. What is the man’s genotype? What are the genotypes of the children?

4. If two people who are both carriers for a genetically inherited fatal recessive disease decide to become parents, what will be the odds that their children will also be carriers?

5. If a woman is homozygous normal and her husband is heterozygous for a genetically inherited recessive disease and they decide to become parents, what is the probability that they will have a healthy child?

6. If two parents are heterozygous for a genetically inherited dominant trait, what is the probability that they will have a child together who has this trait in his or her phenotype?

7. If two parents are homozygous for a genetically inherited recessive trait, what is the probability that they will have a child who does not have this trait in his or her phenotype?

8. Identify the following as heterozygous or homozygous:
TT RR Rr Ss YY Uu Ww NN BB pp

9. Identify the following phases in mitosis/meiosis:

12. Mitosis vs. Meiosis