Table 1 Genomic features in Cyclotella cryptica and Thalassiosira pseudonana

Cell size

8 × 10 μm

4 × 5 μm

Nuclear genome size

161.7 Mbp (GC 43%)

31 Mbp (GC 47%)

Repeatome (%)

53

2

 Classified repeats (%)

13

ND

 Unclassified repeats (%)

40

ND

Percent coding DNA

10.0

19.2

66.3

Gene density (genes/Mbp)

50

131

379

Total models

8133

21,121

11,776

Average model length (bp)

1986

1471

1746

Average number of exons per gene

2.95

2.18

2.54

Average exon length (bp)

599

608

613

Average number of introns per gene

1.95

1.18

1.5

Average intron length (bp)

115

125

125

Chloroplast genome size (bp)

129,320

128,813

Total chloroplast models

132

127

Mitochondrial genome size (bp)

58,021

43,827

Total mitochondrial models

35

35