Biology / Unit 5 Bio 1067 short lesson, about 20 seconds
Genetic Linkage
Captions available
The idea
Genetic linkage occurs when two loci sit close on the same chromosome, so their alleles tend to be inherited together, not assorting independently.
In practice
Two flower-color and pollen-shape genes near each other on one sweet-pea chromosome transmit together more often than independent assortment predicts.
Where people slip
Linkage is a documented exception to independent assortment, tied to chromosome proximity — not a failure of segregation itself.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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