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 (D)</p> Signup and view all the answers

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

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

How can gene mutations occur in multifactorial inheritance disorders?

<p>Due to mutagens exposure (D)</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> (B)</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 (A)</p> Signup and view all the answers

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

<p>Assortment (B)</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 (B)</p> Signup and view all the answers

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

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

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

<p>Nondisjunction (C)</p> Signup and view all the answers

Which treatment approach shows promise for some monogenic disorders?

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

What can be the result of translocation during meiosis?

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

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