NAME: ________________________

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4 Written Questions

4 Multiple Choice Questions

  1. 23 chromosomes
  2. one from each parent
  3. carbon sugar, phosphate group, nitrogenous base
  4. DNA- double stranded, contains deoxyribose sugar and thymine base
    RNA- single stranded, contains ribose sugar and uracil base

3 True/False Questions

  1. Which two nitrogenous bases are purines? pyrimidlines?protein

          

  2. what is a gene?sequence of DNA that codes for a protein and determines a trait

          

  3. How many chromosomes are found in a normal body cell?23 chromosomes

          

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