#!/usr/bin/env python
# coding: utf-8

# Human Evolution
# 
# Suppose we have a population of 50 million. Suppose that we have a gene that gives you a 10% boost to your worth as a member of a community, in the sense that it increases the number of your children who survive to reproductive ager by 10%.
# 
# 

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# log odds ratio for 1/10 million

import numpy as np    



np.log(1/(10*10**6))


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# log odds ratio for 1/10

np.log(1/10)


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# log odds ratio for 9/10

np.log(10)


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# time to go from 10% to 90%

25*(4.6/.1)


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25*(13.8/.1)


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