Quiz 5
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Questions and Answers

Which of the following specialized DNA sequences provides an attachment point for the segregation of duplicated chromosomes?

  • centromeres (correct)
  • telomeres
  • replication origins
  • nucleosomes
  • The description of the DNA double helix was____.

  • a combined effort of multiple scientists including Watson and Crick, Wilkins, and Franklin. (correct)
  • published for the first time in 1961
  • not believed by many people
  • the work of Thomas Hunt Morgan
  • Shown below is a schematic of an interphase chromosome. Which region is most likely to contain the highest density of genes?

  • A
  • B (correct)
  • C
  • D
  • The nucleolus______.

    <p>assembles ribosomal RNA and proteins into ribosomes from 10 chromosomes that form a loop structure at their tip</p> Signup and view all the answers

    ___________ is a sequence of DNA that contains the information required for making a particular functional RNA or protein.

    <p>A gene</p> Signup and view all the answers

    The technique whereby DNA is amplified is called________.

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

    Which of the following describes the chromosomal makeup of a somatic cell of a human biological male?

    <p>22 pairs of autosomes + 1 X chromosome + 1 Y chromosome</p> Signup and view all the answers

    Which of the following is a function of the protein component of chromosomes?

    <p>It packages the DNA strands.</p> Signup and view all the answers

    Which of the following is found at the ends of eukaryotic genomes?

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

    Karyotyping refers to_____.

    <p>chromosomal staining and analysis</p> Signup and view all the answers

    Study Notes

    Chromosomal Structure and Function

    • Centromere provides an attachment point for the segregation of duplicated chromosomes.

    Discovery of DNA Structure

    • James Watson and Francis Crick described the DNA double helix.

    Chromosome Composition

    • The region near the chromatin where it is less condensed is most likely to contain the highest density of genes.

    Nucleolus Function

    • The nucleolus is the site of rRNA synthesis and ribosome assembly.

    Gene Definition

    • A gene is a sequence of DNA that contains the information required for making a particular functional RNA or protein.

    DNA Amplification

    • PCR (Polymerase Chain Reaction) is the technique whereby DNA is amplified.

    Human Chromosomal Makeup

    • A somatic cell of a human biological male has 46, XY chromosomes.

    Chromosomal Protein Function

    • Histone proteins form a structure that protects and organizes DNA in chromosomes.

    Eukaryotic Genome Structure

    • Telomeres are found at the ends of eukaryotic genomes, protecting them from deterioration.

    Chromosomal Analysis

    • Karyotyping refers to the process of preparing and analyzing a visual representation of an individual's chromosomes.

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    Description

    Test your knowledge of chromosomes, DNA structure, and gene function with this quiz. Covering topics from chromosomal structure to nucleolus function and gene definition.

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