The presence of pharyngeal (gill) pouches in the embryos of fish, birds and humans alike is evidence drawn from
Correct answer: D. comparative embryology
- A. comparative anatomy of adults
- B. palaeontology
- C. biogeography
- D. comparative embryology
Explanation
Early vertebrate embryos resemble one another far more than the adults do, and structures such as pharyngeal pouches and a post anal tail appear even in species that never use them, because development follows an inherited common programme. In humans the pouches go on to form parts of the ear, tonsil and parathyroid rather than gills. Adult anatomy, fossils and distribution are separate lines of evidence.
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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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