What are two examples of types of body structures that provide evidence of a common ancestor among diverse organism's?

What are two examples of types of body structures that provide evidence of a common ancestor among diverse organism's?
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Which is most primitive ancestor of man ? -General Knowledge

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Which is most primitive ancestor of man

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What are the three examples of food which is produced using micro organisms. What types of micro organisms are used in each case?

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Generality is the measure of _____________ a) Ease with which the method can be adapted to different domains of application b) The average time required to construct the target knowledge structures from some specified initial structures c) A learning system to function with unreliable feedback and with a variety of training examples d) The overall power of the system

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Last Answer : a) Ease with which the method can be adapted to different domains of application