Table 1.

The putative nucleomorph genome features in green dinoflagellates and the overview of completely sequenced nucleomorph genomes in cryptophytes and chlorarachniophytes.

	MGD*	TGD*	Cryptophytes**	Chlorarachniophytes**
# protein genes	>323	>493	450–500	300–350
# function annotated protein genes	>297	>442	−280	−180
# photosynthesis-related protein genes	>26	>28	0	0
G + C%	36.29***	33.27***	25	30
Gene expression	High	High	High	High
Introns	Probable retained	Probable retained	Retained (excluding an exception****)	Retained

* Number contains only the protein genes with high similarity to green algae.

** Data taken from the review paper (Tanifuji and Onodera 2017).

*** G + C% calculated based on the transcripts of Nm-candidates. Not included intergenic regions.

**** H. andersenii (cryptophyte) nucleomorph genome is known as an intron-less eukaryotic genome (Lane et al. 2007).