Difference Between Prototheria Metatheria And Eutheria

Difference Between Prototheria Metatheria And Eutheria
Difference Between Prototheria Metatheria And Eutheria
  • 👤 Avtor Mildred Bawerman 📧 [email protected].
  • ⏱ Public 2023-07-30 19:51.
  • 🖍 Nazadnje spremenjeno 2025-01-22 22:34.

The key difference between Prototheria Metatheria and Eutheria is that Prototheria refers to egg-laying mammals while Metatheria refers to marsupials that give birth to partially developed young ones, and Eutheria refers to placental mammals that give birth to well-developed young ones.

Based on the major variations in reproductive systems, mammals can be categorized into three subclasses: Prototheria, Metatheria and Eutheria. Prototheria includes the most primitive mammals, which are egg-laying mammals, especially monotremes. Metatheria includes marsupials while Eutheria includes true placental mammals. In fact, Eutheria is the largest subclass of mammals.

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