NEETZoologyEvolution
What do similarities in proteins and genes among diverse organisms suggest?
Options
- AThat organisms are from different evolutionary backgrounds
- BThat organisms share a common ancestry
- CThat organisms have evolved in isolation
- DThat organisms have no evolutionary relationships
Correct answer
B. That organisms share a common ancestry
Step-by-step solution
Hence, analogous structures are a result of convergent evolution - different structures evolving for the same function and hence having similarity. Other examples of analogy are the eye of the octopus and of mammals or the flippers of Penguins and Dolphins. One can say that it is the similar habitat that has resulted in selection of similar adaptive features in different groups of organisms but toward the same function: Sweet potato (root modification) and potato (stem modification) is another example for analogy.