Mutations occur when in replication there is a variation in a nucleotide and therefore there is variation in a gene. Hence the importance of remembering the basics about nucleic acids • Complete the cards using the data in the box as clues.
MRNA = linear, adenine, uracil, ribose, thymine, 2, 1, phosphoric acid (H₂PO₂), tRM = clover, deoxyribose, guanine, DNA replication and self-duplication, rRNA = globular, M-helix model, protein synthesis (translation), transcription, genetic material.

Deoxyribonucleic acid DNA =
Constituted by:
Nitrogen bases:
Pentose:
Phosphate group:
Source:
Function:
Number of chains:
Shape:

RNA = ribonucleic acid
Constituted by:
Nitrogen bases:
Pentose:
Phosphate group:
Source:
Function:
Number of chains:
Shape: