In DNA, each nucleotide consists of a deoxyribose (red licorice), a phosphate (marshmallow), and a nitrogenous base (candy heart). It is important that the deoxyribose and phosphates make up the back bone and that the bases are bound to the deoxyribose.
Just as well, each nucleotide in RNA consists of a ribose (black licorice), a phosphate, and a nitogenous base. Much like DNA, the ribose and phosphates make up the back bone and that the bases are bound to the ribose.
The candy heart bases are as follows:
- Thymine (DNA only) - Yellow
- Adenine - Pink
- Guanine - Orange
- Cytosine - Purple
- Uracil (RNA only) - White
Based on the original stand of DNA, the complimentary strand of RNA was created using the correct base pairs: G to C and C to G (in both RNA and DNA) and a DNA T to an RNA A, a DNA A to an RNA U. This matching models transcription.
The original DNA strand was glued in place in the earlier activity. Icing was used as glue.
Unit 4: Genetics & Heredity