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प्रश्न
Differentiate between Ontogeny and Phylogeny.
अंतर स्पष्ट करें
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उत्तर
| Aspect | Ontogeny | Phylogeny |
| Definition | Life history or development of an individual organism starting from the ovum (embryonic development). | Evolutionary history or lineage of a species or race. |
| Scope | Developmental stages an individual organism passes through. | Evolutionary changes and relationships across generations/species. |
| Focus | Individual growth and development processes. | Ancestral evolutionary history of a group or species. |
| Duration | Occurs during the lifetime of a single organism. | Spans evolutionary time across multiple generations or species. |
| Example | Embryonic development of a frog showing tadpole stage. | Evolutionary lineage showing how amphibians evolved from fish-like ancestors. |
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