Comparing gene base sequences provides more evolutionary information than comparing protein structures because DNA has more bases than amino acids, includes introns (non-coding DNA), and the degenerate nature of the code means multiple triplets can code for the same amino acid.
Comparar sequências de bases de genes fornece mais informações evolutivas do que comparar estruturas de proteínas porque o DNA tem mais bases do que aminoácidos, inclui íntrons (DNA não codificante) e a natureza degenerada do código significa que vários tripletes podem codificar o mesmo aminoácido.
| Front | comparing the base sequence of genes provides more evolutionary information than comparing the structure of proteins. Explain why? (3 marks) |
|---|---|
| Back | Reference to base triplets/triplet code / more bases than amino acids / longer base sequence than amino acid sequence; 2. Introns / non-coding DNA; 3. Degeneracy of code / more than one code for each amino acid |
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