The cytochrome c protein is sometimes used to describe the evolutionary relationship between species. This is because

Question

Quizplus · Accepted Answer

Cytochrome c is a protein found in the mitochondria of many organisms. Scientists compare the amino acid sequences of cytochrome c from different species to infer evolutionary relationships. The underlying principle is that the more similar the sequences are, the more closely related the species are, because they share a more recent common ancestor. This is because changes in DNA (and thus protein sequences) accumulate over time due to mutations. Therefore, species with fewer differences in their cytochrome c sequences are considered to be more closely related on an evolutionary scale.

The Cytochrome C Protein Is Sometimes Used to Describe the Evolutionary