Human Genome Project and Genetics
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Questions and Answers

What is a recessive allele?

  • An allele that is represented by uppercase letters
  • An allele that is only expressed when two copies are present (correct)
  • An allele that is dominant in a heterozygote
  • An allele that is always expressed
  • Why were all F1 plants purple in Mendel's experiments?

  • Because the allele for white flowers was expressed
  • Because they had two alleles for purple flowers
  • Because they had only one allele for purple flowers (correct)
  • Because the allele for purple flowers was stronger
  • Why is an allele considered dominant in a heterozygote?

  • Because it is expressed while the other allele is not (correct)
  • Because it is represented by lowercase letters
  • Because it occurs most frequently in the population
  • Because it is better than the recessive allele
  • How are alleles for traits often represented on paper?

    <p>With uppercase letters for dominant alleles and lowercase letters for recessive alleles</p> Signup and view all the answers

    In the context of pea plants, which letter represents the dominant allele for height?

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

    What was the main goal of the Human Genome Project?

    <p>To determine the sequence of nucleotide pairs in a human's genome</p> Signup and view all the answers

    What does 'genotype' typically refer to in genetics?

    <p>A specific set of genetic makeup</p> Signup and view all the answers

    Which term describes an organism's genetic material that cannot be seen?

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

    What term describes the physical characteristics of an individual organism?

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

    If a pea plant has one allele for purple flowers and one for white flowers, what color will the flowers be if one allele is dominant over the other?

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

    In genetics, what is a dominant allele?

    <p>An allele that is expressed when two different alleles are present</p> Signup and view all the answers

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