<P> In population biology and demography , the generation time is the average time between two consecutive generations in the lineages of a population . In human populations , the generation time typically ranges from 22 to 32 years . Historians sometimes use this to date events , by converting generations into years to obtain rough estimates of time . </P>
<P> In population biology and demography , the generation time is the average time between two consecutive generations in the lineages of a population . In human populations , the generation time typically ranges from 22 to 32 years . Historians sometimes use this to date events , by converting generations into years to obtain rough estimates of time . </P>
how long is a human generation in years
how long is a human generation in years
from 22 to 32 years
from 22 to 32 years