Biology / Unit 6 Bio 1337 short lesson, about 20 seconds
"Genes Are Blueprints Executed Literally"
Captions available
The idea
A gene functions as a regulated template rather than a literal blueprint, since its expression depends on regulatory context a cell applies.
In practice
The same globin gene is expressed in developing red blood cells and left largely silent in skin cells, despite identical DNA.
Where people slip
A blueprint executes the same way regardless of context — a gene's expression depends on signals this unit traced.
Your place on the trail
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