When comparing DNA sequence of species, scientists understand better the evolutionary relationships that they could not find simply by looking at morphology. Evidence of DNA is changing and taxonomy is helping them fix the classification of species evolving from common ancestor. Ever since Charles Sibley introduced the DNA-DNA hybridization, DNA efficiency becomes more accurate for classification. He took a egg white protein to analyze its enzyme using this technique. Today, this technique is used by numbers of scientists to improve the use of taxonomy.
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