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Genetics

Genetics. With your FAVORITE HOST… Ms. Ings. If a boy is colorblind, he inherited it from…. A) His mother B) His father C) Both his mother and father D) Unable to determine. Your phenotype is based on. A) Your DNA B) Your Genotype C) Your Environment D) Both DNA and Environment.

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Genetics

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  1. Genetics With your FAVORITE HOST… Ms. Ings

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

  3. Your phenotype is based on • A) Your DNA • B) Your Genotype • C) Your Environment • D) Both 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 recessive • B) 25% Heterozygous • C) 75% Dominant Phenotype • D) 50% Recessive Phenotype

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

  7. Genes located on the X or Y chromosomes are referred to as • A) Alleles • B) Recessive • C) Sex-linked • D) Autosomal

  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-Dominance • B) Incomplete Dominance • C) Sex-linked • D) Multiple Genes

  10. Using this pedigree, individuals with the arrows are • A) Heterozygous • B) Homozygous Dominant • C) Homozygous Recessive • D) Genotype unknown

  11. Explain how this happens.

  12. For a female to have hemophilia, she must have • A) a Y chromosome • B) at least one dominant allele • C) two recessive alleles • D) two 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-Dominance • B) Incomplete Dominance • C) Sex-linked • D) Multiple Genes

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

  16. Number 2 is • A) Homozygous dominant • B) Heterozygous • C) Sex-linked • D) Homozygous Recessive E E e E 1 2 3 4

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

  18. An individual who is heterozygous for a ______ disorder is called a carrier. • A) Allele • B) Albinism • C) Recessive • D) Dominant

  19. Seed color and pod size are examples of • A) Genotypes • B) Phenotypes • C) Heterozygous • D) Heredity

  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 Dominance • B) Co-Dominance • C) Law of Independent Assortment • D) Law of Segregation

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

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

  24. F2:F1 :: F1:___ • A) F2 • B) P2 • C) P • D) F1

  25. This diagram demonstrates • A) Test Cross • B) Pedigree • C) Dihybrid Cross • D) Karyotype

  26. II4 is what relation to III3? • A) Aunt • B) Father • C) Uncle • D) Nephew

  27. For two heterozygous individuals the phenotype ratio is _____ and the genotype ratio is _____. • A) 3:1, 1:2:1 • B) 1:2:1, 2:2 • C) 1:1, 3:1 • D) 3:1, 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% • B) 25% • C) 50% • D) 100%

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

  31. Alternate forms of a gene are called _______. • A) Traits • B) Alleles • C) Chromosomes • D) Heredity

  32. Which of the following has a heterozygous genotype? • A) RR • B) rr • C) Rr • D) Rg

  33. On average there are more color blind males because • A. Women need two alleles to be colorblind • B. Men require two alleles to be colorblind • C. Women have two X chromosomes and it is inherited on the Y chromosome • D. Men 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% • B) 25% • C) 50% • D) 100%

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

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

  37. What is the pattern of inheritance for this pedigree? • A) Dominant • B) Recessive • C) Sex Linked • D) Cannot 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% • B) 75% • C) 25% • D) 0%

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

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

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

  42. In a pedigree, a circle represents a … • A) Child • B) Parent • C) Male • D) Female

  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) WW • B) Ww • C) W_ • D) ww

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