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Table 2 Ectocarpus cross-strain fertility

From: Molecular evolution of candidate male reproductive genes in the brown algal model Ectocarpus

   Male
   Nap
1a
Per
1c
Cro
2c
Tam
2d
PAr
2d
NZ
4
Cph
5a
Pen
5a
Fas
5b
Female Nap, 1a F post post z z post z pre post
Per, 1c post F        
Cro, 2c post   F z z    pre post
Tam, 2d z   z F z    prea  
PAr, 2d pre   z z F    prea  
NZ, 4 post      F    
Cph, 5a z         
Pen, 5a pre   pre prea prea    F  
Fas, 5b pre   pre       F
  1. Data on cross-fertility summarized from [40, 41, 8587]. Clade numbers corresponding to the phylogenetic position in are given with the strain names. F – full interfertility, z – zygote formation, no data on growth, pre – prezygotic barriers, no cell fusion, post – hybrids with reduced growth or non-functional reproductive structures. aNo data on the actual Penikese strain (Pen) are available; fertilization data were inferred from Woods Hole, Massachusetts strain of similar restriction in the mating pattern with other strains, but completely interfertile with the Penikese strain