TEST 3 Notecards---THIS ONE.docx - A statistically random unpredictable mutation is called a spontaneous b induced c conditional d dynamic Answer

TEST 3 Notecards---THIS ONE.docx - A statistically random...

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A statistically random, unpredictable mutation is called: a) spontaneous. b) induced. c) conditional d) dynamic. Answer: A-- spontatneous A teratogen is a chemical that: a) perturbs development without a change in the DNA. b) perturbs development because of changes in the DNA. c) allows normal development without a change in the DNA. d) allows normal development even with a change in the DNA. Answer: A A mutation that results after the application of a chemical like ethyl methanesulfonate is called: a) spontaneous. b) induced. c) conditional d) dynamic. Answer: B--induced A mutation is an alteration:   a) in the phenotype of the offspring.  b) in the DNA of a gene or chromosome.  c) caused by a teratogen.  d) in the allele frequency.  e) in the DNA. f) in the morphology of an offspring.  g) in the acetylation state of histones.   h) in the sequence of DNA.  Answer: B E H This term specifically refers to a mutation that is not transmitted to a progeny but produces an organism that is a mosaic of mutant and normal tissue: a) somatic mutation. b) germ-line mutation. c) conditional mutation. d) gain-of-function mutation. Answer: A—somatic mutation The color pattern of Siamese cats is due to a color allele with this kind of mutation: a) X-linked. b) semi-dominant. c) conditional. d) nonsense. e) sex-linked. f) mitochondrial. g) temperature sensitive. Answer: c— conditional g— temperature sensitive A mutation is a(n): a) new phenotype that arises unexpectedly in a population. b) alteration in the DNA of a gene or chromosome. c) inevitable result of being exposed to a mutagen. d) event that causes changes in the development of an organism. Answer: b A temperature-sensitive mutation is an example of this kind of mutation: a) gain-of-function. b) ectopic. c) conditional. h) frameshift. Answer: c-- conditional
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To the right are cartoons portraying two flowers. To the left is a normal plant with color in the petals; the right one has a mutation that prevents the color from being made. Which of these best describes this kind of mutation? a) Loss of function b) Gain of function c) Hypomorphic d) Hypermorphic Answer: A H423. To the right are cartoons portraying two flowers. To the left is a normal plant with color in the petals; the right one has a mutation that results in pigment not only being made in the petals, but ectopically in all of the tissues. Which of these best describes this kind of mutation? a) Loss of function b) Gain of function c) Hypomorphic d) Hypermorphic Answer: B T7. To the right are cartoons portraying two flowers. To the left is a normal plant with color in the petals; the right one has a mutation where pigments are made, but not as much as the wild- type. Which of these best describes this kind of mutation?
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  • Spring '18
  • Auger
  • Genetics, Mutation, TG C G G TC TG C C TG G AATA ATTC AAG, c-conditional

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