Molecular Clock Concept in Phylogenies

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Questions and Answers

How is the molecular clock concept used to construct phylogenies?

  • By identifying the most recently evolved species in a lineage
  • By comparing the DNA sequences of unrelated species
  • By calculating the time elapsed since species diverged from a common ancestor using known mutation rates (correct)
  • By measuring the rate of evolution within a single generation

What is one application of evolutionary algorithms mentioned in the text?

  • Predicting global weather patterns
  • Designing new biological species
  • Analyzing geological formations
  • Optimizing stock portfolios (correct)

Which step in running an evolutionary algorithm relates to natural selection?

  • Step 2 - Highest fitness individuals contribute the most to the next generation (correct)
  • Step 4 - Only the best few solutions are selected as parents
  • Step 1 - Initialization of the population with random solutions
  • Step 3 - Individuals randomly mate to create offspring

What characteristic of mutations is crucial for the accurate use of the molecular clock concept?

<p>Constant rate over generations (C)</p> Signup and view all the answers

In evolutionary algorithms, what happens during the process of selecting 'parents' for the next generation?

<p>The best few solutions are selected as parents (D)</p> Signup and view all the answers

Why are evolutionary algorithms considered valuable in solving complex problems?

<p>Because they can handle problems with multiple variables that have countless combinations (B)</p> Signup and view all the answers

What is a consequence of strong selection according to the text?

<p>Inhibition of a more optimal solution (A)</p> Signup and view all the answers

Why is step 3 not what happens in nature according to the text?

<p>It has an end goal (C)</p> Signup and view all the answers

How does reproductive isolation in nature relate to the development of new species?

<p>It promotes local adaptation (A)</p> Signup and view all the answers

Why is the analogy between the evolution of languages and biological evolution considered accurate in the text?

<p>Languages share similarities with those they evolve from (B)</p> Signup and view all the answers

What role does mutation and sexual recombination play in the evolutionary process according to the text?

<p>Generating new variation for selection to act on (B)</p> Signup and view all the answers

"Evolution of different languages/dialects as an analogy for evolution of different species from a common ancestor" is stated as not completely holding up because:

<p>Languages are learned and not genetically hard-wired (C)</p> Signup and view all the answers

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