A scientist is performing an investigation using biochemistry. She compares the sequence of amino acids in the protein Cytochrome c of several species.

Question

Her data is shown in the table.

AA_comp_table_2.jpg

This scientist claims that all living organisms are related by way of common descent. What evidence does the data in the table provide to support this statement?

The data shows that species from humans to yeast all share the same DNA, and identical amino acids, thus - supporting the statement.

The similarities in amino acids does not relate to DNA, and the more differences in amino acids between species, supports the statement.

The differences in amino acids sequence relate directly to DNA, and the more differences in amino acids, the more similar the organisms.

The data shows that species from humans to yeast all share a common protein, and therefore, similar DNA supports the statement.

choose the correct answer

Answer 1

The data shows that species from humans to yeast all share a common protein, and therefore, similar DNA supports the statement.

Answer 2

The data shows that species from humans to yeast all share a common protein, and therefore, similar DNA supports the statement. is the correct answer

Answer 3

Yes, that is the correct answer. The similarity in the amino acid sequence of the protein Cytochrome c across different species suggests a common ancestry and shared DNA. This supports the idea that all living organisms are related by way of common descent.