What is the slope relative to the molecular clock that is ra

What is the slope relative to the molecular clock that is rate of change of amino acid sequence of hemoglobin?

Solution

The slope relative to the molecular clock that is rate of change of amino acid sequence of hemoglobin is 5.8 MY i.e 5.8 millions of years since divergence.The slope is a straight line and it depicts that during evolution,replacements of aminoacids in hemoglobin took place at a relatively constant rate nearly 5.8 million year ago.The slope value obtained is for aminoacid changes that took place for 13 pairs of hemoglobin proteins in vertebrates.The average rate of change gives the molecular clock of hemoglobin in vertebrates.