Dinosaurs (Aside from the Lineage That Produced Birds)were Extinct by the End

question 38

Multiple Choice

Dinosaurs (aside from the lineage that produced birds) were extinct by the end of the ________.

• A)Cretaceous
• B)Silurian
• C)Eocene
• D)Permian

---

Definitions:

Gene Expression

The process by which the information encoded in a gene is used to direct the assembly of a protein molecule.

Synaptic Connections

The points at which neurons in the brain or nervous system communicate with one another, playing a critical role in the transmission of neural signals.

Fetal Brain Development

The process by which the brain grows and develops during pregnancy, including the formation of neural pathways.

Hypothalamic-pituitary-adrenal Axis

A major part of the neuroendocrine system controlling reactions to stress and regulating many body processes, including digestion, the immune system, mood and emotions, and energy storage and expenditure.