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4 Written questions

4 Multiple choice questions

  1. sequence of DNA that codes for a protein and determines a trait
  2. protein
  3. 23 pairs
  4. 46 chromosomes

3 True/False questions

  1. Which two nitrogenous bases are purines? pyrimidlines?purines: adenine and guanine
    pyrimidlines: cytosine and thymine


  2. Where do the chromosomes in each pair come from?23 chromosomes


  3. What are the 3 differences between DNA and RNA?DNA- double stranded, contains deoxyribose sugar and thymine base
    RNA- single stranded, contains ribose sugar and uracil base


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