Human Growth and Development / Unit 7 HGD 0902 short lesson, about 20 seconds
Height, Genes and Environment
Captions available
The idea
Height is strongly heritable, but heritability describes variation across a population, not how much of one person's height genes produce.
In practice
Undernourishment, childhood disease or severe neglect producing stunting, a child far shorter than expected for age.
Where people slip
Stunting is linked to behavioural and cognitive problems; family income and national wealth also shape average height.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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