Genetics A couple who are both carriers of the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will be phenotypically normal? ...

Genetics

1. A couple who are both carriers of the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will be phenotypically normal?

2. In crossing a homozygous recessive with a heterozygote, what is the chance of getting an offspring with the homozygous recessive phenotype?

3. Brown (B) color in mice is dominant to white (b) color. What would be the probability of getting a white mouse when two hybrid brown mice are crossed.

4. Albinism (lack of skin pigmentation) is caused by a recessive allele. A man and a woman, both normally pigmented, have an albino child. What is the genotype of the albino child? What is the probability that the next child will be an albino?

5. A couple has three children, all of whom have brown eyes and blond hair. Both parents are homozygous for brown eyes (BB), but one is a blond (rr) and the other is a redhead (Rr). What is the probability that their next child will be a brown-eyed redhead?

6. Tallness (T) is dominant to dwarfness (t), while red (R ) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, homozygous red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotypes and phenotypes of the F1 generation?

7. A dwarf man with normal vision marries a color-blind woman of normal height. The man’s father was six feet tall, and both the woman’s parents were of average height. Only color-blindness is a sex-linked trait. How many of the female children might be expected to be color blind dwarfs?

8. Hemophilia is caused by a sex-linked recessive allele. A man with hemophilia has a daughter of normal phenotype. She marries a man who is normal for the trait. What is the probability that they will have a son with hemophilia.

9. A man with Type AB blood marries a woman with type 0 blood. What is the probability of producing an offspring with type 0 blood. What about type AB blood.

10. A man with type A blood marries a lady with type B blood. They have three kids with type A, type B and type O blood. What are the genotypes of the parents?

Origin of Life/Evolution

1. What is chemical evolution?

2. Describe the Miller and Urey experiment and what they discovered.

3. What are proteinoids and how are they formed?

4. What is the first cell called? _____________________________

5. What are the stromatolites ______________________________

6. What are the two organelles involved in the endosymbiotic theory?

7. What are the four parts of Darwin’s Theory

8. What is the premise of the Use and Disuse Theory?

9. What is Wallace’s contribution to the theory of Evolution.

10. There are four areas of research in Evolution. Choose one area and describe how it supports the theory of Evolution.