Lesson 1 - Genetics and Inheritance
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Questions and Answers

What is the full name of DNA?

  • Ribose nucleic acid
  • Deoxyribonucleic acid (correct)
  • Deoxyribonucleotide
  • Ribonucleic acid

    • Where is DNA found in eukaryotic cells?

  • Nucleus (correct)
  • Cytoplasm
  • Mitochondria
  • Endoplasmic reticulum

    • Who used x-ray crystallography to determine that DNA had a spiral shape?

  • Rosalind Franklin (correct)
  • Dorothy Hodgkin
  • Barbara McClintock
  • Marie Curie

    • What are the components of DNA?

    <p>Long chain of nucleotides</p> Signup and view all the answers

    What do genes represent?

    <p>Units of inherited material</p> Signup and view all the answers

    Which nucleotide pairs with adenine in DNA?

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

    What is the packaging form of DNA called in eukaryotic cells?

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

    What represents the rungs (horizontal rows) of the double helix model for DNA?

    <p>Nitrogenous bases</p> Signup and view all the answers

    Young students often have misconceptions that DNA is controlled by what unseen material?

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

    What are some traits that are inherited?

    <p>Inherited characteristics called traits</p> Signup and view all the answers

    What are histones?

    <p>Bead-shaped proteins that DNA is tightly coiled around</p> Signup and view all the answers

    What are nucleosomes?

    <p>Structures resembling beads that DNA and histones form</p> Signup and view all the answers

    How many chromosomes do human somatic (body) cells have?

    <p>46 chromosomes</p> Signup and view all the answers

    What is a karyotype?

    <p>A photograph/chart of chromosome make-up used to determine if chromosomes are normal</p> Signup and view all the answers

    What happens when a cell is about to divide?

    <p>All DNA in the cell has to be duplicated</p> Signup and view all the answers

    What is a mutation?

    <p>Change in the DNA of an organism</p> Signup and view all the answers

    What are chromosomes?

    <p>Long, invisible, tangled fibers made of DNA and proteins</p> Signup and view all the answers

    What is a mutagen?

    <ul> <li>ex. A substance/factor that causes a mutation (that is known)</li> </ul> Signup and view all the answers

    What are nucleosomes?

    <p>Structures resembling beads that DNA and histones form</p> Signup and view all the answers

    What happens when a cell is about to divide?

    <p>All DNA in the cell has to be duplicated</p> Signup and view all the answers

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