This image shows a rosette of maturing asci (meiotic cells) of Neurospora crassa, from Wild type x histone H1-GFP. Histone H1 being a chromosomal protein, the GFP-tagged nuclei (two per spore at this stage) glow in four of the eight ascospores of each ascus; the remaining four ascospores carry the untagged nuclei from the wild-type parent.

Photo Credit:
Namboori B. Raju, Stanford University