A biologist receives seven new species of live insects from Brazil and is asked to determine their evolutionary relationships. Which method could help the biologist with this task?

Firstly, biologist must look at the similarities in their structural anatomy.

Secondly their embryonic development should be studied to trace the similarities in their development.

Thirdly, to determine the degree of evolutionary similarity and dissimilarity, the biologist should study and compare their DNA sequences.

Explanation:

Evolutionary biology deals with the study of evolution of life forms along with the process by which the earth and the species thriving on it changed with time.Evolutionary studies believe that all the species evolved from a single common ancestor.However, they differentiated at different times and thus their degree of similarities and dissimilarities vary.To determine the evolutionary relationship evolutionary biologist consider three evidences- anatomical similarities, Genetic similarities and developmental similarities.

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