Practice question · True or false
A heritability estimate of 50% within one population tells you that about half of any average difference between two populations is genetic.
Hints
- What is heritability a statement about?
- Variance within a group, not the gap between groups.
Show the answer
False
Why
False. Heritability describes variance within the population measured and carries no implication about between-group differences. Lewontin's seed-lot analogy makes it concrete: identical seeds in rich and poor soil give high within-plot heritability and a between-plot difference that is entirely environmental.
Practise Nature vs. Nurture
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