Human Genome: Coding and Non-Coding Sequences
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Questions and Answers

What percentage of the human genome codes for proteins?

  • Approximately 10%
  • Less than 2% (correct)
  • Around 5%
  • More than 50%

    • How many base pairs does the average human gene consist of?

  • 500 base pairs
  • 5,000 base pairs
  • 1,000 base pairs
  • 3,000 base pairs (correct)

    • What is the largest known human gene in terms of base pairs?

  • Fibrinogen (2 million base pairs)
  • Dystrophin (2.4 million base pairs) (correct)
  • Hemoglobin (1.5 million base pairs)
  • Insulin (3 million base pairs)

    • What allows human cells to make more proteins than the number of genes in the human genome?

    <p>Alternative splicing of mRNA transcripts</p> Signup and view all the answers

    Which type of sequences make up about 50% of the human DNA?

    <p>Coding repetitive sequences</p> Signup and view all the answers

    What percentage of discovered genes have unknown functions?

    <p>More than 50%</p> Signup and view all the answers

    What is the approximate percentage of the human genome that is the same among individuals of all nationalities and backgrounds?

    <p>99.9%</p> Signup and view all the answers

    What is the function of introns in the genome?

    <p>Help in mRNA modification</p> Signup and view all the answers

    Which term describes the process that can yield different protein products from the same gene?

    <p>Alternative splicing</p> Signup and view all the answers

    What is the classification of genes that are crucial for basic cellular functions?

    <p>Housekeeping genes</p> Signup and view all the answers

    Which type of repetitive sequences in human DNA can belong to a gene family like globins or actins?

    <p>Coding repetitive sequences</p> Signup and view all the answers

    What is the approximate percentage of the human genome that codes for proteins?

    <p>2%</p> Signup and view all the answers

    What allows many human genes to produce more than one protein?

    <p>&quot;Alternative splicing&quot;</p> Signup and view all the answers

    What is the term for the process that involves chemical modifications of proteins from mRNA transcripts?

    <p>&quot;Post-translational regulation&quot;</p> Signup and view all the answers

    What is the primary function of exons in a gene?

    <p>Code for proteins</p> Signup and view all the answers

    What type of genes are responsible for basic cellular functions in an organism?

    <p>Housekeeping genes</p> Signup and view all the answers

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