>>10846114Say we have an average historical generational gap of 20-25 years and lets estimate that historically a mother would produce a chilld ever one to 2 years, fact of life in the old times was that generally infant mortality was through the roof so only a few would make it to adulthood so lets put an estimate at about 10-15 children per woman with maybe 2 or 3 going on to have their own children.
so that's 30 mutations multiplied by 10-15 so that's 300-450 new mutations every generation with maybe a 20-30% survival rate so that's 4-5 generations per century probably higher for early primate ancestors. I don't know how to do the maths but assuming we have a population of 10,000 scattered about the place with all the potential churn you could have quite high selection rates acting over a couple of centuries
how many generations does it usually take for an introduced species to adapt or two geographically isolated species to evolve from one?
there have been observational studies of lizards introduced to volcanic islands that have speciated within the span of less than 60 years.