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

What do genes represent?

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

Which nucleotide pairs with adenine in DNA?

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

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

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

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

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

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

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

What are some traits that are inherited?

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

What are histones?

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

What are nucleosomes?

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

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

<p>46 chromosomes (D)</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 (A)</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 (B)</p> Signup and view all the answers

What is a mutation?

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

What are chromosomes?

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

What is a mutagen?

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

What are nucleosomes?

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

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