.¿Qué es el ADN y cual es su importancia para la célula?

Explain the significance of meiosis in sexual reproduction

Prokaryotic and eukaryotic cells are different in many ways other than the presence or absence of a nucleus. if both archaebacteria and eubacteria are prokaryotic cells, then why are archaebacteria more closely related to eukaryotic cells than they are to eubacteria?

Can an organism fill more than one trophic level?