1. GeneticsGenetics With your FAVORITE HOST… Ms. Ings

2. If a boy is colorblind, he inherited it from… A) His motherHis mother B) His fatherHis father C) Both his mother and fatherBoth his mother and father D) Unable to determineUnable to determine

3. Your phenotype is based on A) Your DNAYour DNA B) Your GenotypeYour Genotype C) Your EnvironmentYour Environment D) Both DNA and EnvironmentBoth DNA and Environment

4. A man with Achondroplasia (whose mother was normal) marries a female that is normal. What is the chance of having a child with this disorder? A. 0% B. 25% C. 75% D. 50%

5. If you crossed two heterozygous individuals, their offspring would have A) 0% Homozygous recessive0% Homozygous recessive B) 25% Heterozygous25% Heterozygous C) 75% Dominant Phenotype75% Dominant Phenotype D) 50% Recessive Phenotype50% Recessive Phenotype

6. Independent assortment and crossing over increase A) The number of offspringThe number of offspring B) Genetic LinkageGenetic Linkage C) Sex-linked traitsSex-linked traits D) Genetic DiversityGenetic Diversity

7. Genes located on the X or Y chromosomes are referred to as A) AllelesAlleles B) RecessiveRecessive C) Sex-linkedSex-linked D) AutosomalAutosomal

8. Blood types is an example of… 1. Codominance 2. incomplete dominance 3. polygenetic 4. multiple alleles A. 1 B. 1, 2 C. 2, 3 D. 1, 4

9. A Red flower is crossed with a white flower, the offspring are pink, this is an example of A) Co-DominanceCo-Dominance B) Incomplete DominanceIncomplete Dominance C) Sex-linkedSex-linked D) Multiple GenesMultiple Genes

10. Using this pedigree, individuals with the arrows are A) HeterozygousHeterozygous B) Homozygous DominantHomozygous Dominant C) Homozygous RecessiveHomozygous Recessive D) Genotype unknownGenotype unknown

11. Explain how this happens.

12. For a female to have hemophilia, she must have A) a Y chromosomea Y chromosome B) at least one dominant alleleat least one dominant allele C) two recessive allelestwo recessive alleles D) two dominant allelestwo dominant alleles

13. A person with type A marries a person with type O. Which of following could be an offspring? A. Type O B. Type B C. Type AB D. Cannot Deterine

14. Roan cows are an example of A) Co-DominanceCo-Dominance B) Incomplete DominanceIncomplete Dominance C) Sex-linkedSex-linked D) Multiple GenesMultiple Genes

15. Most human traits are … A) DominantDominant B) RecessiveRecessive C) Either Dominant or RecessiveEither Dominant or Recessive D) Complex and still not fully understoodComplex and still not fully understood

16. Number 2 is A) Homozygous dominantHomozygous dominant B) HeterozygousHeterozygous C) Sex-linkedSex-linked D) Homozygous RecessiveHomozygous Recessive 12341234 E eEeE

17. Two parents have the genotype Gg for a dominant genetic disorder. What are the chances their offspring will have the disorder? A) 25%25% B) 50%50% C) 75%75% D) 100%100%

18. An individual who is heterozygous for a ______ disorder is called a carrier. A) AlleleAllele B) AlbinismAlbinism C) RecessiveRecessive D) DominantDominant

19. Seed color and pod size are examples of A) GenotypesGenotypes B) PhenotypesPhenotypes C) HeterozygousHeterozygous D) HeredityHeredity

20. Cystic Fibrosis is a recessive disorder. Resulting in the following symptoms. Fill in the blank.

21. The alleles from your mother and father separating into different gametes is seen in A) Law of DominanceLaw of Dominance B) Co-DominanceCo-Dominance C) Law of Independent AssortmentLaw of Independent Assortment D) Law of SegregationLaw of Segregation

22. The ______ can only result in one _____. A) Trait, AlleleTrait, Allele B) Genotype, phenotypeGenotype, phenotype C) Phenotype, AllelePhenotype, Allele D) Phenotype, GenotypePhenotype, Genotype

23. Both parents have widow’s peak. Their children should have… A) All Widow’s peakAll Widow’s peak B) No Widow’s peakNo Widow’s peak C) Half widow’s peak and half no widow’s peakHalf widow’s peak and half no widow’s peak D) Not enough informationNot enough information

24. F2:F1 :: F1:___ A) F2F2 B) P2P2 C) PP D) F1F1

25. This diagram demonstrates A) Test CrossTest Cross B) PedigreePedigree C) Dihybrid CrossDihybrid Cross D) KaryotypeKaryotype

26. II4 is what relation to III3? A) AuntAunt B) FatherFather C) UncleUncle D) NephewNephew

27. For two heterozygous individuals the phenotype ratio is _____ and the genotype ratio is _____. A) 3:1, 1:2:13:1, 1:2:1 B) 1:2:1, 2:21:2:1, 2:2 C) 1:1, 3:11:1, 3:1 D) 3:1, 2:23:1, 2:2

28. If a person has type AB blood and marries a man with type A. Which of the following could NOT be a possible genotype of the offspring? A. Type A B. Type AB C. Type O D. Type B

29. If a family has 4 girls (like mine!), what are the chances of their next child being a boy? A) 0%0% B) 25%25% C) 50%50% D) 100%100%

30. Mendel’s discoveries came from his… A) Careful microscopic evaluation of chromosomes and genesCareful microscopic evaluation of chromosomes and genes B) Dissections on how fertilization occurs in pea plantsDissections on how fertilization occurs in pea plants C) Breeding experiments with many generations of fruit fliesBreeding experiments with many generations of fruit flies D) Analysis of offspring from several crosses of pea plantsAnalysis of offspring from several crosses of pea plants

31. Alternate forms of a gene are called _______. A) TraitsTraits B) AllelesAlleles C) ChromosomesChromosomes D) HeredityHeredity

32. Which of the following has a heterozygous genotype? A) RRRR B) rrrr C) RrRr D) RgRg

33. On average there are more color blind males because A. Women need two alleles to be colorblindWomen need two alleles to be colorblind B. Men require two alleles to be colorblindMen require two alleles to be colorblind C. Women have two X chromosomes and it is inherited on the Y chromosomeWomen have two X chromosomes and it is inherited on the Y chromosome D. Men are more likely due to chanceMen are more likely due to chance

34. A man with hemophilia marries a woman that is a carrier. What percent of their sons will have it? A) 0%0% B) 25%25% C) 50%50% D) 100%100%

35. Two roan cows are crossed. What are the phenotype ratio of the offspring? A) 3:13:1 B) 75%:25%75%:25% C) 50% : 50%50% : 50% D) 1:2:11:2:1

36. BbRr x BbRr are crossed. What are the phenotype ratio of the offspring? A) 3:13:1 B) 1:2:11:2:1 C) 1:1:1:11:1:1:1 D) 9:3:3:19:3:3:1

37. What is the pattern of inheritance for this pedigree? A) DominantDominant B) RecessiveRecessive C) Sex LinkedSex Linked D) Cannot DetermineCannot Determine

38. Parents, one heterozygous for two traits and the other homozygous recessive for two traits, produce_______ offspring that are homozygous dominant for both traits A) 100%100% B) 75%75% C) 25%25% D) 0%0%

39. If a girl is colorblind, … A) Her mother must be colorblindHer mother must be colorblind B) Her father cannot be colorblindHer father cannot be colorblind C) Her mother cannot be colorblindHer mother cannot be colorblind D) Her father is colorblindHer father is colorblind

40. Straight hair is recessive and curly hair is dominant. In co-dominance, the heterozygous condition would be A) CurlyCurly B) StraightStraight C) WavyWavy D) Some straight hairs, some wavy hairsSome straight hairs, some wavy hairs

41. Which of the following is a dominant trait? A) Ability to taste PTCAbility to taste PTC B) Hitchhikers thumbHitchhikers thumb C) Cystic FibrosisCystic Fibrosis D) AlbinismAlbinism

42. In a pedigree, a circle represents a … A) ChildChild B) ParentParent C) MaleMale D) FemaleFemale

43. When an organism has a heterozygous genotype, the dominant trait is seen. This can be explained by … A) Law of Dominance B) Law of Segregation C) Law of Independent Assortment D) Law of Combination of Traits

44. A person has a widow’s peak. All of the following EXCEPT ____ can be the genotype. A) WWWW B) WwWw C) W_W_ D) wwww