[throwawayacc5]

>How heritable is height?

Very, somewhere in the 80% range: "The estimated heritability was 0.79 (SE 0.09) for height and 0.40 (SE 0.09) for BMI, consistent with pedigree estimates." [0][1]

>For bonus points: why has the heritability of height changed over time

It hasn't.

>and varied by country?

It hasn't.

Love it when the bonus questions are easier than the main questions.

[0] https://www.science.org/content/article/landmark-study-resol...

[1] https://www.biorxiv.org/content/10.1101/588020v1