1. What did Francis Crick and James Watson discover?

2. What is the shape of a DNA molecule called?

3. True or False: Over 99% of the DNA in different human beings is the same.

4. Most genes within DNA hold instructions for the cell to make a specific _____.

5. What does DNA stand for?

6. How many types of nucleotides are there in DNA?

7. Which of the following is not a letter that represents a nucleotide in DNA?

8. Three letters of DNA nucleotides make up a word called a _____.

9. What is another name for the nucleotides in DNA?

10. Phosphate and deoxyribose make up what part of DNA?