As Embryos,baleen Whales Have Teeth and Also Have Two Nostrils

question 48

Multiple Choice

As embryos,baleen whales have teeth and also have two nostrils directly above their mouth.Before birth,however,the teeth are reabsorbed,and the nostrils migrate and fuse to become the blowhole.What does this observation suggest about the ancestry of these whales?

• A) Baleen whales descended from an aquatic ancestor that breathed through an elongated snout, much like the modern alligator does today.
• B) Baleen whale ancestors lived in habitats where the potential for mutation was relatively high; early abnormalities during embryonic development are later corrected before birth.
• C) Baleen whales evolved from a terrestrial mammalian ancestor and share common inherited developmental features.
• D) Modern terrestrial mammals are descended from the same marine mammal ancestors that gave rise to modern whales.

---

Definitions:

Male Or Female

The two primary categories of biological sex or gender identity in humans, typically based on reproductive anatomy at birth.

Androgyny

The blending or combination of both masculine and feminine characteristics in an individual.

Gender-Role Stereotyping

The assignment of roles, behaviors, and attributes to individuals solely based on their gender, often leading to limiting beliefs and inequalities.

The Glass Ceiling

The glass ceiling is an invisible barrier that prevents certain individuals, often women and minorities, from rising beyond a certain level in a hierarchy, especially in employment sectors.