description: The Browning et al. (2011) model of admixture in the Americas.
doi:
  - https://doi.org/10.1371/journal.pgen.1007385
time_units: generations
demes:
- name: ancestral
  description: Equilibrium/root population
  epochs:
  - {end_time: 5920, start_size: 7310}
- name: AMH
  description: Anatomically modern humans
  ancestors: [ancestral]
  epochs:
  - {end_time: 2040, start_size: 14474}
- name: OOA
  description: Bottleneck out-of-Africa population
  ancestors: [AMH]
  epochs:
  - {end_time: 920, start_size: 1861}
- name: AFR
  description: African population
  ancestors: [AMH]
  epochs:
  - start_size: 14474
- name: EUR
  description: European population
  ancestors: [OOA]
  epochs:
  - {start_size: 1000, end_size: 34039}
- name: EAS
  description: East Asian population
  ancestors: [OOA]
  epochs:
  - {start_size: 510, end_size: 45852}
- name: ADMIX
  description: Admixed America
  ancestors: [AFR, EUR, EAS]
  proportions: [0.167, 0.333, 0.5]
  start_time: 12
  epochs:
  - {start_size: 30000, end_size: 54664}

migrations:
- {demes: [AFR, OOA], rate: 15e-5}
- {demes: [AFR, EUR], rate: 2.5e-5}
- {demes: [AFR, EAS], rate: 0.78e-5}
- {demes: [EUR, EAS], rate: 3.11e-5}