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NEET UG BIOLOGY MCQ: CELL-CYCLE & CELL DIVISION
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ln an angiospermic plant, how many meiosis are required for the formation of 104 male gametes from microspore mother cell?
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Correct option: A
13
Option A (13) is correct because each microspore mother cell undergoes one meiosis to produce 4 microspores, and each microspore develops into 2 male gametes. Therefore, to produce 104 male gametes, 52 microspores are needed, requiring 13 meiotic divisions (52/4 = 13).
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At metaphase of mitosis, each chromosome consists of ________ chromatid(s) _________ centromere(s) _________ kinetochore(s) and _________ molecule(s) of DNA.
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In which phase, DNA content will be doubled?
Assertion : Cell growth is a continuous process
in terms of cytoplasmic increase.
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two specific stages in the cell cycle. Interkinesis means What is the approximate duration of cell cycle for a mammalian cell?
in terms of cytoplasmic increase.
Reason : DNA synthesis occurs only during
two specific stages in the cell cycle. Interkinesis means What is the approximate duration of cell cycle for a mammalian cell?