Understanding Genes
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Questions and Answers

Which term best describes an individual who carries a recessive allele for a monogenic disorder but does not express the phenotype?

  • Carrier (correct)
  • Affected
  • Resistant
  • Expressed
  • What process is responsible for separating homologous chromosomes into sex cells during meiosis?

  • Translation
  • Nondisjunction
  • Segregation (correct)
  • Transcription
  • What can happen if chromosomes fail to separate correctly during meiosis?

  • Duplication
  • Nondisjunction (correct)
  • Deletion
  • Mutation
  • In Down syndrome, individuals have an extra copy of which chromosome?

    <p>Chromosome 21</p> Signup and view all the answers

    Which genetic disorder is characterized by having three copies of chromosome 21?

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

    How can gene mutations occur in multifactorial inheritance disorders?

    <p>Due to mutagens exposure</p> Signup and view all the answers

    What can be a factor that influences the expression of symptoms in multifactorial inheritance disorders?

    <p><strong>Genetic and environmental factors together</strong></p> Signup and view all the answers

    What is the term for an individual who carries a recessive allele for a monogenic disorder but does not express the phenotype?

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

    Which process involves separating homologous chromosomes into sex cells during meiosis?

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

    What is the term for a genetic disorder caused by environmental factors and gene mutations?

    <p>Multifactorial inheritance disorder</p> Signup and view all the answers

    Which disorder is characterized by having an extra copy of chromosome number 21?

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

    What is the term for the process where chromosomes fail to separate correctly during meiosis?

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

    Which treatment approach shows promise for some monogenic disorders?

    <p>Gene therapy</p> Signup and view all the answers

    What can be the result of translocation during meiosis?

    <p>Extra genetic material in gametes</p> Signup and view all the answers

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