Multiple choice

Which of the following bones constitute the lower jaw in mammal?

  1. Squamosal

  2. Dentary

  3. Quardrate

  4. Maxilla
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B Correct answer
Explanation

In mammals, the lower jaw consists of a single bone called the dentary. This is a key mammalian characteristic distinguishing them from other vertebrates, where the lower jaw comprises multiple bones (quadrate, articular, etc.).

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