Suggestions for Implementation This activity is intended for students who have already learned about biological polymers (including the basic structure of proteins and DNA) and have been introduced to the concepts of chromosomes and genes. The questions on page 1 provide an opportunity to review some of the relevant concepts. We also assume that students have learned about the importance of the base-pairing rule in DNA structure and DNA replication (e.g. using the "DNA" activity on this website; see footnote). If you have already introduced transcription and translation, your students probably can complete this activity in two 50-minute periods. However, if you would like to use this activity to introduce the topic, another possible sequence for four 50-minute periods

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