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NEST2019BiologyEvolution

Approximately 400 million years ago, closely related fish species Q got separated from species P by continental drift. Species Q got confined in a small region where environmental temperature ranged between 4^ C and 10^ C . The species P got populated in a bigger region where the environmental temperature ranged between 24^ C and 35^ C . Genome sequencing and other physiological analyses established the following fac

Options

  1. ASpecies Q has a high energy expenditure ratio (reproduction/muscle development).
  2. BSpecies Q achieved adaptive benefit by reducing its genome size and eliminating its redundant genes.
  3. CSpecies Q makes more ATP and tends to spend less time for reproductive purposes.
  4. DThe missing genes in species Q may provide clues about regulation of body size and longevity.

Correct answer

D. The missing genes in species Q may provide clues about regulation of body size and longevity.

Step-by-step solution

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