Because plants lack centrioles, microtubule organizing centers activate during this phase of mitosis.
This process has a "pre" version which sees a namesake band form around the phragmosome. In the first meiotic version of this process, which takes up about ninety percent of the time required for meiosis, synapsis creates tetrads and allows homologous recombination to result in crossing-over at the chiasmata. Because plants lack centrioles, microtubule organizing centers activate during this phase of mitosis. In this phase of mitosis, the nucleolus [*] disintegrates, spindle fibers begin to form asters, sister chromatids attach at centromeres, and chromatin condenses into chromosomes. For 10 points, name this first stage of mitosis.
This process has a "pre" version which sees a namesake band form around the phragmosome.
{prophase}