The following diagram refers to a typical cell cycle.

Identify the parts marked as X, Y and Z.

1. X - G1; Y - S; Z - G2                      2. X - G2; Y - S; Z - G1

3. X - G0; Y - S; Z - G2                     4. X - G1; Y - G2; Z - G0

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Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres:

(a) Metaphase I     (b) Metaphase II   (c) Anaphase I      (d) Anaphase II

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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

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Select the correct statement about G1 phase:

(a) Cell is metabolically inactive

(b) DNA in the cell does not replicate

(c) It is not a phase of synthesis of macromolecules

(d) Cell stops growing

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Which of the following number of cells can be expected from the human cell culture after 70hrs
A. 4
B. 8
C. Both A and B
D. 2

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Which of the following is a continuous process?

A.    Cell growth

B.    Cell differentiation

C.   DNA duplication

D.   Cell division

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Cell growth is a continuous process in terms of

A.      Increase in protein content

B.      Increase in DNA content

C.      Increase in cytoplasmic content

D.     Increase in RNA content

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The process of distribution of duplicated DNA in the daughter cells is

A.      Easy process

B.      A complex series of events

C.      A single complex process

D.     Easiest process in all the events bof cell cycle.

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How many cells can be expected in a yeast culture after  540 minutes?

A.      64

B.      512

C.      256

D.     32

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If a yeast cell is grown for 540 minutes in a Cell culture, how many cycles of division can be expected in that time?

A.      9

B.      6

C.      3

D.     63

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