If the DNA content of an onion tip cell is 2C at the end of M phase, what would be its DNA content at the end of S phase?

(a) C

(b) 2C

(c) 3C

(d) 4C

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The cell shown in the given diagram is in:

     

1. Early prophase

2. Late prophase

3. Metaphase

4. Telophase

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In oocyte of some vertebrates, the stage of meiosis I that can last for months or years would be:

(a) Zygotene

(b) Pachytene

(c) Diplotene

(d) Diakinesis

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When a cell stops growing, say due to shortage of nutrients, this will occur in which phase of the cell cycle?

1. G0

2. G1

3. S

4. G2

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At what phase of meiosis are homologous chromosomes separated ?

1. Prophase l
2. Prophase ll
3. Anaphase l
4. Anaphase ll

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Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?

(a) Chromosomes will not condense

(b) Chromosomes will be fragmented

(c) Chomosomes will not segregate

(d) Recombinantion of chromosome arms will occur 

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DNA replication in bacteria occurs

(a) during S-phase

(b) within nucleolus

(c) prior to fission 

(d) just before transcription 

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Which of the following options gives the correct sequences of events during mitosis?
(a)Condensationnuclear membrane disassemblycrossing overSegregationtelophase

(b)Condensationnuclear membrance disassemblyarrangement at equatorcentromere divisionsegregationtelophase

(c) Condensationcrossing overnuclear membrance disassemblysegregationtelophase

(d) Condensationarrangement at equator centromere divisionsegregationtelophase

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During cell growth, DNA synthesis takes place in

(a) S-phase                       (b) G1-phase

(c) G2-phase                     (d) M-phase 

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When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

(a) G1/s
(b) G2/M
(c) M
(d) Both G2/M and M

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