Waa kuwee waxyaabaha soo socda ee cuntada laga helo: xashiishadda, xashiishadda, ama xashiishadda? Marka la eego su'aasha hore, ku qor macnaha guud ee jawaabta. Waxay noqon kartaa 1 ilaa 20 jumladood. Macnaha guud:
Qaar ka mid ah dinophytes, sida Kryptoperidinium iyo Durinskia waxay leeyihiin chloroplast diatom (heterokontophyte). Chloroplasts-yada waxaa ku wareegsan ilaa shan xuub, (waxay kuxirantahay inaad ku xisaabtameyso dhammaan diatom endosymbiont sida chloroplast, ama kaliya chloroplast-ka algal cas ee ku jira). Diatoma endosymbiont-ka wax yar baa la yareeyay weli wuxuu hayaa mitochondria-kii asalka ahaa, wuxuuna leeyahay reticulum endoplasmic, ribosomes, nucleus, iyo dabcan, chloroplasts algae cas laga soo qaatay ficil ahaan unug buuxa, dhammaantoodna waxay ku jiraan gudaha lumen-ka reticulum endoplasmic ee martida. Si kastaba ha noqotee diatom endosymbiont ma kaydin karo cuntadiisa - istaarijihiisa waxaa laga helaa granules oo ku jira cytoplasm-ka hoyga dinophyte halkii. Nucleuska diatom endosymbiont wuu jiraa, laakin ma'ahan in loo yaqaano 'nucleomorph' sababtoo ah ma muuqato wax calaamado ah oo hoos u dhaca genome, waxaana laga yaabaa in la balaariyay. Dhirta loo yaqaano diatoms-ka waxaa ugu yaraan seddex jeer ku noolaa xayawaan nooca loo yaqaano dinoflagellate.