Biology / Unit 4 Bio 0835 short lesson, about 20 seconds
Genes, Traits, and Variation
Captions available
The idea
A trait is one observable variant of a characteristic a gene controls; a species' variation arises from allele combinations each individual inherits.
In practice
Hair color is a characteristic; blonde, brown, and black are traits from different gene combinations.
Where people slip
A trait like eye color reflects normal variation, not a defect — variation across a population is expected, not an exception.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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