Name: _______________________________

DNA, Replication, Transcription, and Translation in Ramalian DNA

aliensOn the planet of Rama, the DNA is of six nucleotide types: A, B, C, D, E, and F. Instead of a double helix, Raman DNA is a triple helix, with three strands, where the center strand is the main coding region.

A and B are called marzines,
C and D are orsines
E and F are pirines.

The following rules are valid in all Raman DNAs:

Total marzines = total orsines = total pirines
A = C = E
B = D = F

Within the molecule, pirines are always found on the left.

1. Prepare a model for the structure of Raman DNA that has a coding region (center strand) as follows:

A B C D A B B B A C C A A D D

2. RNA of Romalians contains the bases A,B,C,D, and only codes from the center strand of the chain. A <--> C; B <--> D
Use the strand above to show what the RNA would look like for that stretch of DNA.

 

3. On Rama, there are only 4 amino acids: tryptophan, lysine, glutamine, valine, and proline. Weirdly, an RNA chain only has instructions if there are two of the same letters in sequence, and the third letter doesn't matter. For example:

AA x= tryptophan
BB x= lysine
CC x = valine
DD x = proline

Using your RNA chain, determine the amino acid sequence that your DNA strand codes for.