1. Genetics Review

2. Gregor Mendel is known as: A. Father of Biology B. Father of Genetics C. Father of DNA D. Father of Science B. Father of Genetics

3. Mendel conducted experiments on: A. Flowers B. Fruit Flies C. Pea Plants D. Worms C. Pea Plants

4. Mendel’s experiments looked at _______ generations. A. 1 B. 2 C. 3 D. 4 C. 3 generations (P, F 1, F 2 )

5. What is heredity? A. Passing on of characteristics to offspring B. Cell division C. Genetic Cross D. Genetic disease A. Passing on of characteristics to offspring

6. What is genetics? A. Study of life B. Study of DNA C. Study of chromosomes D. Study of heredity D. Study of heredity

7. What are traits? A. Inherited characteristics B. Represented by alleles C. Controlled by genes D. All of the above D. All of the above

8. A section on a chromosome that controls a specific trait: A. Crossing over B. Gene C. Nucleus D. All of the above B. Gene

9. An alternate form of a gene A. DNA B. Gamete C. Allele D. Chromosome C. Allele

10. This trait can “dominate” or mask another allele. A. Recessive Trait B. Dominant Trait C. Gene D. Allele B. Dominant Trait

11. This trait is represented by CAPITAL LETTERS A. Recessive Trait B. Dominant Trait C. Gene D. Allele B. Dominant Trait

12. This trait is represented by lowercase letters A. Recessive Trait B. Dominant Trait C. Gene D. Allele A. Recessive Trait

13. This trait always gets masked (dominated) in a heterozygous hybrid A. Recessive Trait B. Dominant Trait C. Gene D. Allele A. Recessive Trait

14. What does genotype mean? A. Appearance B. DNA sequence C. Gene combination D. A type of font C. Gene combination

15. What does phenotype mean? A. Appearance B. DNA sequence C. Gene combination D. A type of font A. Appearance

16. The gene AA is an example of: A. Homozygous recessive B. Homozygous dominant C. Heterozygous D. None of the above B. Homozygous Dominant

17. A person who is heterozygous (Aa) is also known as a ________. A. Carrier B. Multiple alleles C. Incomplete dominance D. Zombie A. Carrier

18. A person who is heterozygous (Aa) is also known as a ________. A. Carrier B. Multiple alleles C. Incomplete dominance D. Zombie A. Carrier

19. What genotype is only represented by a recessive trait? A. AA B. Aa C. aa D. None of the above C. aa genotype

20. What genetic cross only uses one trait? A. Monohybrid Coss B. Dihybrid Cross C. Incomplete dominance D. None of the above A. Monohybrid cross

21. What genetic cross uses two or more traits? A. Monohybrid Coss B. Dihybrid Cross C. Incomplete dominance D. None of the above B. Dihybrid Cross

22. Two Heterozygous red flowers are crossed (white is recessive). What are the genotypes of the parents being crossed? A. RR B. Rw C. ww B. Rw

23. Two Heterozygous red flowers are crossed (white is recessive). What are the genotypes of the offspring? A. RR, Rw B. RR, ww C. RR, Rw, ww D. All Pink C. RR, Rw, ww R w R RR Rw w ww

24. Two Heterozygous red flowers are crossed (white is recessive). What proportion of offspring are white? A. 1/4 B. 2/4 C. 3/4 D. 4/4 A. 1/4 R w R RR Rw w ww

25. Dark hair is dominant to light hair and Brown eyes are dominant to blue eyes. A male that is heterozygous for both traits is crossed with a female that is heterozygous for Dark hair and blue-eyed. What are the genotypes of the parents being crossed? A. DDbb x ddbb B. DDBb x Ddbb C. DdBb x DDbb D. DdBb x Ddbb D. DdBb x Ddbb

26. Dark hair is dominant to light hair and Brown eyes are dominant to blue eyes. A male that is heterozygous for both traits is crossed with a female that is heterozygous for Dark hair and blue-eyed. In a cross of DdBb x Ddbb, what are the possible genetic combinations of parent #1. (Hint: Foil) A. DB, Db, dB, db B. DB, dB C. DdBb D. DD, Bb, dd A. DB, Db, dB, db

27. Dark hair is dominant to light hair and Brown eyes are dominant to blue eyes. A male that is heterozygous for both traits is crossed with a female that is heterozygous for Dark hair and blue-eyed. What proportion of offspring will have a phenotype of dark hair and blue eyes? A. 1/4 B. 1/8 C. 2/8 D. 3/8 D. 3/8 DBDbdB db Db DDBbDDbbDdBbDdbb db DdBbDdbbddBb ddbb

28. What is the law of segregation? A. The formation of genes B. Each gene has two alleles that are separated (segregated) when gametes form C. Genes from different traits are inherited independently D. Defines DNA B. Each gene has two alleles that are separated when gametes are formed

29. What is the law of independent assortment? A. The formation of genes B. Each gene has two alleles that are separated (segregated) when gametes form C. Genes from different traits are inherited independently D. Defines DNA C. Genes from different traits are inherited independently

30. What are multiple alleles? A. More than one allele B. Two alleles C. Three or more alleles D. All of the above C. Three or more alleles

31. What is Incomplete Dominance? A. Results in a phenotype that is the mixing of the two alleles. B. Results in a phenotype that expresses both alleles equally C. Both A and B D. None of the above A. Results in a phenotype that is the mixing of the two allels.

32. What is Codominance? A. Results in a phenotype that is the mixing of the two alleles. B. Results in a phenotype that expresses both alleles equally C. Both A and B D. None of the above B. Results in a phenotype that expresses both alleles equally

33. A cross between a purebred animal with red hairs and a purebred animal with white hairs produces an animal that has both red hairs and white hairs. Is this incomplete dominance or codominance? Codominance- traits are equal R W R RR RW W WW What are the genotypes for the parents?RW What is the phenotype ratio of the offspring? ¼: Red 2/4: Red and white patches ¼: White

34. A cross between a purebred animal with red hairs and a purebred animal with white hairs produces an animal that is pink. Is this incomplete dominance or codominance? Incomplete Dominance- Traits are mixed R R’ R RR’ R’ RR’ What are the genotypes for the parents?RR’ What is the phenotype ratio of the offspring? All Pink: 4/4

35. How many alleles found in blood type? A. 1 B. 2 C. 3 D. 4 C. 3- A, B, O

36. Which blood type alleles are dominant? A. A B. B C. O D. Both A and B D. Both A and B

37. What are the possible genotypes for Type A Blood? A. AA, Aa B. I A I A C. I A I A, I A i D. I A I B C. I A I A, I A i

38. A cross between a heterozygous Type A person and a heterozygous Type B person What is the genotype of each parent? I A i x I B i IAIA i IBIB IAIBIAIB IBiIBi i IAiIAiii What proportion of offspring is Type B blood? Type B blood: 1/4

39. What is a sex-linked trait? A. Traits found on all chromosomes B. Traits only found on the X or Y sex chromosomes C. Traits that determine gender D. None of the above? B. Traits only found on the X or Y sex chromosomes

40. Which gender can be a carrier to a disease causing allele located on the x chromosome? A. Women (XX) B. Men (XY) C. They are both carriers D. None are carriers A. Women: XX d, women have the advantage of having an additional X chromosome to save them from the disease. This allows them to be normal, but carry the second disease causing allele

41. Hemophilia is a genetically recessive disease on the X- Chromosome. A cross between a heterozygous woman and a heterozygous Type B person If a carrier female and a normal male have children, what proportion of them will have the disease? X XdXd X XX XX d Y XYXdYXdY Disease: 1/4