I can be a number or a symbol, uniting life forms in intricate ways. I define the survival of the fittest but am not a living being. What am I?
Category: Science · Difficulty: hard
Hint: Think about the fundamental unit of heredity.
Answer
The gene
Explanation
Genes are the basic units of heredity that determine traits and contribute to the process of evolution.
This is a hard science riddle — a tricky one that takes a little thought. The answer is The gene.
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