KEY & SAMPLE DNA LADDER

Original Document: Constructing a DNA Ladder

Students cut out the nucleotides and arrange them. They can be arranged in any order, but make sure they are anti-parallel and that A's match T's and C's match G's. Sample is included here.

Questions:

1. Describe the base-pair rule. A pairs with T; G pairs with C

2. What three things make up a nucleotide?

base (A, T, G, C), phosphate, and the sugar deoxyriboses

3. What does anti-parallel mean?

the sides run opposite, or point in different directions.