Materials

■ plastic soda straws of two different colors, cut into 3 cm sections (54)

■ permanent marker

■ 54 pushpins (12 red, 12 blue, 12 yellow, 12 green, and 6 white)

■ oval-shaped card

Background

1. Describe the structure of DNA.

2. State the base-pairing rules.

3. List the steps involved in the copying of DNA before cell division.

4. What are the roles of mRNA, rRNA and tRNA in protein synthesis?

5. Describe the process of transcription and the process of translation.

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