Biology 2e
Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 18, Problem 15RQ

Which term is used to describe the continued divergence of species based on the low fitness of hybrid offspring?

  1. reinforcement
  2. fusion
  3. stability
  4. punctuated equilibrium

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Assume you are studying secondary contact in two species of birds. You notice that hybrids are produced and that much of the DNA of each species is becoming more similar over time. The likely end point of this process is which of the following?     Fusion     Evolution of reproductive isolation     Reinforcement     Stable and minimal hybrid production
Mach each description below to the correct type of reproductive isolation. Each option will only be used once. Cues required for sex differ [ Choose ] [ Choose ] Temporal isolation Hybrid sterility Hybrid individuals or their offspring have reduced fitness Mechanical isolation Hybrid in viability Ecological isolation Gamete incompatibility Reproduction occurs at different times Behavioral isolation Physical incompatibilities prevent sex [ Choose ] Living in different environments prevents meeting up for sex [ Choose ] Gametes meet, but fertilization does not [ Choose ] occur Hybrid individuals cannot produce [ Choose ] offspring > > > >
Consider the graph below. This is an example of what kind of natural selection? stabilizing diversifying directional O purifying

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