Practice Quiz

IB Biology Exam Prep - Question List

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126.
One consequence of the redundancy of the genetic code is that: 
  1. Somatic mutations do not affect the germ line.
  2. Nucleotide base deletions may lead to frameshift mutations.
  3. Some point mutations have no effect on phenotypic expression.
  4. Missense mutations may result in translocations.
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127.
Which of the following techniques is used to increase the quantity of DNA in a sample to be analyzed?
  1. DNA sequencing.
  2. Polymerase chain reaction.
  3. Restriction fragment analysis.
  4. DNA hybridization.
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128.
Researchers trying to date speciation events in the past for which fossils are not available sometimes rely on evidence that assumes the:
  1. Occurrence of convergent evolution.
  2. Validity of the Hardy-Weinberg equilibrium.
  3. Existence of a molecular clock.
  4. Applicability of the biological species concept.
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129.
Which of the following pairs is a result of convergent evolution?
  1. A turtle's egg and a frog's egg.
  2. A bird's wing and a bat's wing.
  3. A housefly's leg and a bee's leg.
  4. A human hand and a monkey hand.
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130.
The original source of variation in a genome is:
  1. Independent assortment.
  2. Recombination.
  3. Crossing over.
  4. Mutation.
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