Explain how corresponding structures, including vertebrate limbs, support descent despite differences in function.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2022–2026.
The limb plans below retain corresponding bones despite their different uses. Which kind of evidence for common ancestry do they illustrate? A. Analogy produced only by the same habitat B. Unrelated structures that happen to perform identical functions C.…
Penguins are birds and seals are mammals. Both swim using flattened forelimbs with corresponding humerus, radius and ulna bones. Which evolutionary interpretation best explains these observations? A. The swimming specialisations are homologous because the…
Which observations provide evidence for evolutionary change? I. A shared underlying forelimb bone pattern in bats and whales. II. Heritable changes produced by selective breeding of crop plants. III. The claim that every acquired bodily change is automatically…
Outline how mammalian limbs provide evidence for evolution.
Embryos of several vertebrate groups develop a similar post-anal tail, even when this structure is reduced before adulthood. Which interpretation best explains this shared developmental feature? A. They inherited a developmental pattern from a common ancestor…
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