Question

Both ancestral birds and ancestral mammals shared a common ancestor that was terrestrial. Today, penguins (which are birds) and seals (which are mammals) have forelimbs adapted for swimming. What term best describes the relationship of the bones in the forelimbs of penguins and seals, and what term best describes the fins of an aquatic worm and the flippers of seals

Answer 1

Hom0logous structures describes the relationship the bones in the forelimbs of penguins and seals as well as the fins of an aquatic worm and the flippers of seals

What is evolution?

Evolution refers to the process whereby complex life forms develop from simple life forms or non-living matter as a result of gradual changes over a long period of time.

Evidence for evolution include:

• Fossil records
• Anatomy
• Embryology
• Biogeography

Similarity in function and structure of anatomical features is known as h0mologous structures.

Hom0logous structures describes the relationship the bones in the forelimbs of penguins and seals as well as the fins of an aquatic worm and the flippers of seals.

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