Genomic Instability and Hybrid Breakdown
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Questions and Answers

What can be the result of genomic instability in hybrids?

  • Genetic aberrations, such as chromosome loss or rearrangements (correct)
  • Enhanced gene expression
  • Improved viability in subsequent generations
  • Increased fertility

    • What can occur due to epigenetic changes in hybrids?

  • Hybrid breakdown (correct)
  • Increased fertility
  • Enhanced gene expression
  • Improved viability

    • What can influence gene expression patterns without altering the underlying DNA sequence?

  • Genetic mutations
  • Geographic barriers
  • Epigenetic modifications (correct)
  • Genomic instability

    • What can lead to developmental abnormalities in hybrids?

    <p>Epigenetic changes</p> Signup and view all the answers

    What is the result of allopatric speciation?

    <p>Speciation</p> Signup and view all the answers

    What can prevent gene flow in a population?

    <p>Geographic barriers</p> Signup and view all the answers

    What can occur in later generations of hybrids between two species?

    <p>Reduced vigor, increased susceptibility to disease, or reproductive abnormalities</p> Signup and view all the answers

    What is the primary reason for hybrid breakdown?

    <p>Weakening of genetic compatibility</p> Signup and view all the answers

    What is an example of a consequence of genetic incompatibilities in hybrids?

    <p>Reduced fertility, developmental abnormalities, or decreased survival</p> Signup and view all the answers

    What can be a result of conflicts between the genomes of the parent species?

    <p>Genomic instability</p> Signup and view all the answers

    What is the likely outcome of accumulating deleterious genetic combinations over generations?

    <p>Reduced fertility, developmental abnormalities, or decreased survival</p> Signup and view all the answers

    What is a possible consequence of hybrid breakdown?

    <p>Reduced fitness or viability</p> Signup and view all the answers

    What occurs during the passing on of genes from one generation to the next?

    <p>Parts of the genetic blueprints may be copied incorrectly</p> Signup and view all the answers

    What is the result of genetic mutations in a population?

    <p>Some individuals thrive, while others die out</p> Signup and view all the answers

    Which of the following is NOT a concept that helps clarify how descent with modification works?

    <p>Environmental adaptation</p> Signup and view all the answers

    What is the primary driver of evolution in a population?

    <p>Individual selection</p> Signup and view all the answers

    What is the outcome of natural selection in a population?

    <p>Some individuals thrive, while others die out</p> Signup and view all the answers

    What is the unit of evolution, according to the Theory of Evolution?

    <p>Populations</p> Signup and view all the answers

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