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?
View solution & NCERT explanation
Correct answer: B — First is typical mitotic cycle; second is meiosis I with prophase I substages.
Interphase occupies >95% of the cycle in mitotically cycling cells; meiosis I has a long prophase with synapsis and crossing over.
What does NCERT say about M Phase represents phase?
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Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.