Mule Reproduction and Genetics
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Questions and Answers

What is the chromosomal composition of a mule?

  • 31 chromosomes from the mother and 32 chromosomes from the father
  • 33 chromosomes from the mother and 30 chromosomes from the father
  • 30 chromosomes from the mother and 33 chromosomes from the father
  • 32 chromosomes from the mother and 31 chromosomes from the father (correct)

    • Why are mules unable to reproduce with other mules?

  • Mules have a genetic trait that prevents them from reproducing with other mules
  • Mules have an incompatible reproductive system
  • The 63 chromosomes inherited from the parents cannot pair off evenly during meiosis (correct)
  • Mules lack the necessary hormones for reproduction

    • What traits contribute to making mules the best combination of both species?

  • Strength and intelligence from both parents in equal proportions
  • Speed and endurance from both parents in equal proportions
  • Strength from the horse and intelligence from the donkey (correct)
  • Speed from the horse and endurance from the donkey

    • What is the main purpose of outcrossing in animal breeding?

    <p>To mate animals within the same breed but with no relationship to overcome inbreeding depression</p> Signup and view all the answers

    In genetics studies, what is the purpose of backcrossing?

    <p>To isolate certain characteristics in a related group of animals or plants</p> Signup and view all the answers

    What is the key difference between backcrossing and linebreeding?

    <p>Backcrossing involves mating a crossbred animal with one of its parents, while linebreeding involves repeated back crossing to one outstanding ancestor</p> Signup and view all the answers

    What is the purpose of linebreeding in animal breeding?

    <p>To emphasize the characteristics of an outstanding ancestor by repeated back crossing</p> Signup and view all the answers

    What is the primary purpose of outcrossing in animal breeding?

    <p>To overcome the negative effects of inbreeding depression</p> Signup and view all the answers

    How does backcrossing differ from linebreeding?

    <p>Backcrossing is the repeated back crossing to one outstanding ancestor, while linebreeding involves mating a crossbred animal with one of its parents</p> Signup and view all the answers

    In genetics studies, what is the main purpose of backcrossing?

    <p>To reintroduce a specific gene from one parent into the gene pool of the other parent</p> Signup and view all the answers

    What is the purpose of linebreeding in animal breeding?

    <p>To produce offspring with enhanced contribution from an outstanding ancestor</p> Signup and view all the answers

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