What Is the Median Age of MDD Onset

question 1

Multiple Choice

What is the median age of MDD onset?

• A) 16
• B) 25
• C) 30
• D) 40

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Definitions:

Domains

In the context of biology, large, broadly defined areas of life classification above the kingdom level, or regions of a protein with specific structural or functional properties in molecular biology.

Tree of Life

The Tree of Life is a metaphorical and scientific concept describing the evolutionary relationships among various species on Earth across time, often depicted as a branching diagram.

Monophyletic Group

A group of organisms that includes an ancestral species and all of its descendants, representing a single branch on the tree of life.

Clades

Groups of organisms that consist of a single common ancestor and all its descendant species, representing a branch on the tree of life.