Table 4: Base composition of 18S rDNA.

Taxon A (%) T (%) G (%) C (%) G+C (%) Ulva lactuca 26.37 24.50 28.78 20.35 49.13 Klebsormidium flaccidum 26.08 26.80 26.53 20.59 47.11 Chlorella vulgaris 24.97 25.42 27.64 21.97 49.61 Mantoniella squamata 26.01 26.80 26.74 20.45 47.19 Ulva prolifera 24.80 25.67 27.76 21.77 49.53 Monostroma grevillei 25.13 26.55 27.35 20.97 48.32 Paulschulzia pseudovolvox 24.91 25.49 28.02 21.58 49.60 Trebouxia asymmetrica 25.06 26.00 27.34 21.60 48.94 Kornmannia leptoderma 26.51 24.10 28.92 20.48 49.40 Monostroma nitidum 26.17 24.83 28.84 20.16 49.00 Blidingia minima 26.34 23.66 29.14 20.86 50.00 Enteromorpha intestinalis 24.87 25.74 27.78 21.61 49.39 Ulva fenestrata 26.30 24.43 28.84 20.43 49.27 Chloropelta caespitosa 26.44 24.43 28.84 20.29 49.13 Ulvaria obscura var. blyttii 26.44 24.30 28.97 20.29 49.27 Ulothrix zonata 25.09 27.01 27.07 20.83 47.90 Ulva pertusa 24.70 25.95 27.77 21.58 49.35 Ulva californica 26.30 24.57 28.84 20.29 49.13 Percursaria percursa 26.17 24.43 28.97 20.43 49.40 Average 25.72 25.30 28.11 20.87 48.98