root tip of onion and mitosis cell in the root tip of onion under a microscope.

anaphase apoptosis background biological biology cell centromeres chromosome cycle cytokinesis cytology cytoplasmic death dividing division dna education g1 genetic haploid histology homologous interphase laboratory living meiosis membrane metabolism metaphase micronucleus microscope microscopic microscopy mitosis mitotic mutant nucleolus nucleus onion phase plant plate prometaphase prophase replication research rna root science slide stem telophase tip tissue under