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Question

Researchers studying genetic similarity in hornbill species are most likely to use which characteristic for classification?

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

DNA sequence comparison

Biological classification has evolved from relying purely on visible morphological features to using molecular tools that reveal genetic relationships more accurately.

DNA sequence comparison allows scientists to directly measure the degree of genetic similarity between species by examining differences and similarities in their genetic material.

While beak shape, diet, and nesting habits are useful for identifying species based on external or ecological traits, they do not directly reveal genetic relatedness, which can be masked or exaggerated by convergent evolution.

Hence, researchers studying genetic similarity in hornbill species are most likely to use DNA sequence comparison for classification.

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