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Why do scientists compare the DNA of bananas, worms, fruit flies, and humans? How can this information be helpful?

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About 60 percent of our genes have a recognizable counterpart in the banana genome! "Of those 60 percent, the proteins encoded by them are roughly 40 percent identical when we compare the amino acid sequence of the human protein to its equivalent in the banana
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Scientists compare the DNA of bananas, worms, humans, etc., by aligning homo-logous sequences, which is useful to discover gene function and infer evolution.

What is sequence homo-logy?

The expression sequence homo-logy makes reference to the similarity between nucleotide sequences due to the same evolutionary origin.

  • In genetics, nucleotide sequences are aligned to infer sequence homo-logy.
  • The sequence homo-logy may result useful to discover gene function and determine evolutionary relationships.

In conclusion, scientists compare the DNA of bananas, worms, humans, etc., by aligning homo-logous sequences, which is useful to discover gene function and infer evolution.

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