The ______________ is a public database of all the proteins…

The ______________ is a public database of all the proteins that have had their sequences and conformations deciphered. Every time the structure of a new protein is published in a science journal, the information is added to the database. At the touch of button, you have access to over 200,000 molecules.

In 1962, Linus Pauling and Emile Zuckerkandl discovered the…

In 1962, Linus Pauling and Emile Zuckerkandl discovered the molecular clock after looking at differences in the amino acid sequence of _________ in different vertebrate taxa and noticing that the changes occurred regularly through time. The rate of change seemed regular enough to make a reliable clock.

A strong piece of evidence for _______ is amino acid sequenc…

A strong piece of evidence for _______ is amino acid sequence differences in universal, and essential proteins. If the protein has the same function in all the taxa, why would there be differences? And also why would the number of differences reflect the degree of taxonomic differences between the organisms?