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Diplotene

Which phase i...

Question

Which phase is of longest duration in meiosis?

A

Prophase-II

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B

Metaphase-I

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C

Anaphase-I

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D

Prophase-I

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Solution

The correct option is D
Prophase-I

Prophase-I takes longest duration in meiosis. Hence it is sub divided into five stages.

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Similar questions

In which one of the following options the stages of mitosis have been given in correct sequence ?
(a) Prophase, metaphase, telophase, anaphase
(b) Prophase, metaphase, anaphase, telophase
(c) Anaphase, telophase, prophase, metaphase
(d) Telophase, anaphase, prophase, metaphase

Q. Match list I and list II and select the correct answer.

\begin{matrix} List I & List II (Phase of meiosis) & (Event that occurs) 1 & Prophase I & Crossing over occurs 2 & Metaphase II & Sister chromatids migrate to opposite poles 3 & Anaphase I & Homologous chromosomes line up at equator in pairs \end{matrix}

Question 2

At which stage of meiosis does the genetic constitution of gametes is finally decided
(a) Metaphase-I
(b) Anaphase-II
(c) Metaphase-II
(d) Anaphase-I

Q. The following diagram represents stages in the second meiotic division. [5 MARKS]

(i) Label each phase correctly as Prophase II, Metaphase II, Anaphase II or Telophase II.
(ii) Arrange the stages in the correct sequence of development.
(iii) Make a series of sketches to show the phases of cell division in the meiotic division.

Q. A biologist examines a series of cells and counts

160

cells in interphase,

20

cells in prophase,

6

cells in prometaphase,

2

cells in metaphase,

7

cells in anaphase, and

5

cells in telophase. If the complete cell cycle requires

24

hours, what is the average duration of M phase in these cells ?
Stage

Number of cells

Proportion of cells

Average duration

(hours)
Interphase

160 0.80 9.2

20 0.10 2.4

6 0.03 0.72

2 0.01 0.24

7 0.035 0.84

5 0.025 0.6

200 1.0 24

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