M Phase vs Interphase Duration — NEET Biology
📚 Practice ConceptThe M Phase represents the phase when the actual cell division or mitosis occurs and the interphase represents the phase between two successive M phases. It is significant to note that in the 24 hour average duration of cell cycle of a human cell, cell division proper lasts for only about an hour. The interphase lasts more than 95% of the duration of cell cycle.
A histologist measures time spent in phases. In one lineage, division proper lasts ~1 hour with >95% in interphase; in another lineage, a prolonged prophase with synapsis and chiasmata is recorded. Which is the best interpretation?
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