Question

Indicate whether each of the following is generally considered a homology (identical by descent) or a homoplasy (similar structure, but evolutionarily independent). Related organisms share homologies they inherited from their common ancestor even if those have been modified since. Unrelated organisms share homoplasies if evolution has favored a similar solution to a similar "problem". octopus tentacles and fish fins stingray eyes and elephant eyes squid tentacles and oyster foot fruit fly eyes and lion eyes shark fins and dolphin fins bat wing and butterfly wing whale fins and horse forelimbs (front leg) 1. homology 2. homoplasy earthworm coelom and centipede coelom sea urchin blastopore and salamander blastopore

Answer 1

Ans.)

Octopus tantacles and fish fins - Homoplasy

Stingry eye and elepant eye - Homology

Squid tentacles and octopus foot – Homology

Fruit fly eye and lion eye – Homoplasy

Bat wing and butterfly wing – Homology

Whale fin and horse forelimbs – Homology

EartHworm coelom and centipede coelom - Homology

Sea urcin Blastophor and salamander blastophore – Homology

Cat claws and lobster claws - Homoplasy