Table A1 The number of ways and likelihoods that A and B inherit organelle genes and contract the pathogen when both contract it horizontally (case iii, above)
DescriptionProbabilityEmbedded ImageEmbedded Imageθ′
MA = MB = SA = SBEmbedded Image111
MA = MB = SASBEmbedded Image1FsFs
MA = MB = SBSAEmbedded Image1FsFs
MA = MBSA = SBEmbedded Image111
MAMB = SA = SBEmbedded Image1FsFs
MA = SA = SBMBEmbedded ImageFc1Fc
MAMB = SA = SBEmbedded ImageFc1Fc
MA = SAMB = SBEmbedded ImageFcFsθ
MA = SBMB = SAEmbedded ImageFcFsθ
MA = SAMBSBEmbedded ImageFcFsFcFs
MASAMB = SBEmbedded ImageFcFsFcFs
MAMBSA = SBEmbedded ImageFc1Fc
MASBMB = SAEmbedded ImageFcFsFcFs
MA = SBMBSAEmbedded ImageFcFsFcFs
MAMBSASBEmbedded ImageFcFsFcFs
  • Note that the probabilities of outcomes with SA = SB sum to 1/N, the probabilities of outcomes with MA = MB sum to 1/N, the probabilities of outcomes with MA ≠ MB sum to Embedded Image, and the probabilities with SA ≠ SB sum to Embedded Image. MA(B) refers to the mitochondrial donor of individual A (or B). SA(B) refers to the symbiont donor of individual A (or B).