Asked in UHS MDCAT 2017 2017Moderate

Which of the following shows evidence from evolution through molecular biology?

Correct answer: C. Comparison of genes and proteins in different species

  • A. Development of branchial arches invertebrate embryo.
  • B. Distribution of species
  • C. Comparison of genes and proteins in different species
  • D. Study of vestigial organs

Explanation

To compare species to see how they have evolved differently, we look at their gene sequences or the amino acid sequence of essential proteins such as the sequence of the cytochrome C complex. The comparison gives us an idea of how closely related the species are to each other and how they have evolved to be different.

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About Concept of Evolution

Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.

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