Which of the following statements is NOT consistent with demonstrating the valid

Question

Which of the following statements is NOT consistent with demonstrating the validity of the theory of evolution? View Available Hint(s) Although evolutionary studies cannot be caried out in the laboratory or in nature, statistical evidence points to the validity of evolutionary theory. Radiometric dating shows that Earth is more than 4 billion years old. Nucleotide sequences and variations between species are consistent with evolution. organisms show a common occurrence of the same physical structures. An example of this would be the forelimbs of vertebrates. Placement of fossils in rock strata is consistent with evolution o Submit Part E Cytochrome c oxidase is an enzyme found in countless organisms across the living world. Studying this enzyme is valuable for our understanding of evolution because View Available Hint(s) cytochrome c oxidase is the same in most organisms, and this demonstrates that this common trait arose independently throughout evolutionary history cytochrome c oxidase varies between species, but the real evolutionary inference comes in studying the actions of the enzyme. The closer the actions, the closer the ? species are related many organisms have cytochrome c oxidase that is exactly the same, and this demonstrates that all organisms have a common ancestor differences in cytochrome c oxidase can be used to demonstrate the time frame of divergence between different branches of the evolutionary tree Submit

Explanation / Answer

1) Option 'b' is the correct answer.

Radiometric dating to determine the age of earth only by itself does not provide any validation to the theory of evolution. The age of earth if used in conjuction with fossil and molecular data such as the conserved nucleotide sequence etc. and the theories of analogous and homologous development of species provides validation to the theory of evolution. By itself, age of earth does not validate any theory for evolution.

2) Option 'd' is the correct answer.

Multicellular eukaryotic cytochrome c oxidase is distinguished from bacterial cytochrome c oxidase by the presence of additional subunits in the enzyme structure. The number of these additional subunits increases with increasing evolutionary stage of the organism. Differences in cytochrome c oxidase can be hence used to demonstrate the time frame of divergence between branches of the evolutionary tree on the basis of analysing the subunits in the enzyme structure.

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