Concept explainers
(a)
Interpretation:
80% divergence of two proteins from a common ancestor.
Concept introduction:
All the living organisms arise from primitive organisms. The new organisms are called descendents while the primitive organisms are called forefathers or ancestors.
(b)
Interpretation:
50% divergence of two proteins from a common ancestor.
Concept introduction:
The evolutionary process in which organisms from a common ancestor attainnew traits and become different from each other. The amino acid sequence gives an interpretation about the rate of divergence in different organisms.
(c)
Interpretation:
20% divergence of two proteins from a common ancestor.
Concept introduction:
The proteins are formed from the amino acids. The sequence of amino acids is used for evolutionary studies. It helps in detecting the ancestors of different organisms.
(d)
Interpretation:
10% divergence of two proteins from a common ancestor.
Concept introduction:
The descended organisms inherit many traits from their ancestors that help them in their survival. Divergence is a part of the evolutionary history of an organism. The descendants adapt to the new environment by the process of divergence.
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