Mendel's Laws of Inheritance
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Questions and Answers

What percentage of plants in the F2 generation display the recessive trait?

  • 75%
  • 50%
  • 25% (correct)
  • 100%

    • What is the symbolic representation of the genotype of an individual with two copies of the dominant allele?

  • AaAa
  • aa
  • Aa
  • AA (correct)

    • What is the fundamental principle of Mendel's Law of Segregation?

  • The two copies of a gene segregate from each other during transmission from parent to offspring. (correct)
  • The two copies of a gene blend together during transmission from parent to offspring.
  • The combination of genes from both parents determines the trait expressed.
  • Traits are inherited through a process of random chance.

    • What is the characteristic of the particulate theory of inheritance?

    <p>The units governing traits remain unchanged from generation to generation.</p> Signup and view all the answers

    What is the ratio of dominant to recessive offspring in the F2 generation?

    <p>3:1</p> Signup and view all the answers

    What is the term for the physical expression of a genotype?

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

    What is the consequence of irregular segregation?

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

    What is the term for the presence of extra chromosome sets?

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

    What is the result of having an extra chromosome 21?

    <p>Down syndrome</p> Signup and view all the answers

    What is the fundamental principle of Mendel's laws?

    <p>Genes come in pairs</p> Signup and view all the answers

    What is the purpose of creating a pedigree?

    <p>To examine inheritance patterns</p> Signup and view all the answers

    What is the name of the British physician who discovered Down syndrome?

    <p>Langdon Down</p> Signup and view all the answers

    What is the term used to describe an individual with two identical alleles?

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

    What is the purpose of a Punnett Square?

    <p>To predict the proportion of a trait in offspring</p> Signup and view all the answers

    What is the term used to describe the observable characteristics of an organism?

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

    In a two-factor cross, what are the two possibilities of how the traits can be inherited?

    <p>They may be linked or unlinked, and segregate independently</p> Signup and view all the answers

    What is the purpose of Mendel's two-factor crosses?

    <p>To study the interaction between two traits</p> Signup and view all the answers

    What is the experimental system used by Mendel to study inheritance?

    <p>F1 and F2 generations of peas</p> Signup and view all the answers

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