Pastoralists

1
Modeling selection for lactase persistence in
African pastoralist and agro-pastoralist
societies
Methods sdrawkcab EMED

• Model Asumptions
• Selection on Pastoralists was greater than on the
  Agro-pastoralists.
• Longer selection period in the Agro-pastoralists.
• Conlusion Weak selection pressure could explain
  the lactase persistence genotype frequencies
  observed in two African populations.

Pastoralists
Agro-pastoralists
Approximate time of mutation -13200,
st.dev1717, Nsim 20
Approximate time of mutation -6125, st.
dev2273, Nsim 20
Marsha Timmerman, Joyce Cadwallader, Srebrenka
Robic, Bill Bromer