State how comparing the amino acid sequence of a protein can provide evidence that evolution has taken place.
2007-03-19 11:34:12 · 3 answers · asked by Nina N 1 in Science & Mathematics ➔ Biology
Protein comparison: Similarity in protein structure indicates a common ancestry. The amino acid sequence of cytochrome c, an ancient protein common to all aerobic organisms, has been determine for a wide range of organisms from bacteria to complex animals and plants. The sequence found in humans matches the chimpanzees exactly, and differs from the rhesus monkey by just one amino acid. It differs from the dog by 13 the rattlesnake by 20 and the tuna by 31 amino acids.
2007-03-19 12:14:15 · answer #1 · answered by ATP-Man 7 · 0⤊ 0⤋
Well, if you have two proteins with very different functions, but similar amino acid sequences, that suggests that the two proteins once did the same thing but gradually changed until a new function developed.
2007-03-19 11:39:41 · answer #2 · answered by Nicole B 5 · 0⤊ 1⤋
amino acids are determined by dna so if theyre the same so is the dna.
2007-03-19 14:16:22 · answer #3 · answered by wesnaw1 5 · 0⤊ 0⤋