Question

At how many positions are the amino acids the same between the two species?

Answer 1

A human cytochrome c contains 104 amino acids, and when compared to chimpanzee cytochrome c, all amino acids are conserved and identical. In human-to-rhesus monkey comparisons, 103 amino acids are in the same positions.

Step-by-step explanation:

When comparing amino acid sequences between two species to determine the number of positions where the amino acids are the same, we look at conserved amino acids within a protein structure. For example, human cytochrome c contains 104 amino acids, and when comparing sequences between human and chimpanzee cytochrome c, no sequence difference was found. This means that all 104 amino acids are conserved and occupy the same positions in both species. In contrast, when comparing human and rhesus monkey cytochrome c sequences, there is a difference in just one amino acid, implying that 103 amino acids are at the same position.

Answer 2

An amino acids between the two species, there are twenty positions along the sixty amino acids sequence that are identical between the aphid and the bacterium Pantoea. A computer can be used to compare these quences from the rest of the species to the aphid sequence.