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 Multiple Choice QuestionsMultiple Choice Questions

1.

The term 'Meiosis' was given by

  • Johansen

  • Knoll and Ruska

  • A. Flemming

  • Farmer and Moore


2.

Chiasmata are most appropriately observed in meiosis during :

  • diakinesis

  • diplotene

  • metaphase II

  • pachytene


3.

Colchicine prevents the mitosis of the cells at which of the following stage?

  • Anaphase

  • Metaphase

  • Prophase

  • Interphase


4.

Which of the following maintain the constant number of chromosomes generation after generation?

  • Meiosis

  • Endomitosis

  • Mitosis

  • Amitosis


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5.

Which is synthesized in G1 phase ?

  • DNA polymerase

  • Histones

  • Nucleolar DNA

  • Tubulin protein


6.

When synapsis is complete all along the chromosome, the cell is said to have entered a stage called

  • zygotene

  • pachytene

  • diplotene

  • diakinesis


7.

Lampbrush chromosomes are seen in which typical stage

  • mitotic anaphase

  • mitotic prophase

  • mitotic metaphase

  • meiotic prophase


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8.

Which typical stage is known for DNA replication?

  • Metaphase

  • G1- phase

  • S- phase

  • G2- phase


C.

S- phase

S- phase or Synthesis phase is the phase of the cell cycle in which DNA is replicated. It occurs between G1 and G2 phase.

During this phase, DNA is replicated and histones are sythesized so that each chromosomes becomes two chromatids.


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9.

In meiosis division is

  • Ist reductional and IInd equational

  • Ist equational and IInd reductional

  • both reductional

  • both equational


10.

During the cell cycle, DNA content is doubled in the

  • G1 phase

  • S phase

  • G2 phase

  • end of M phase


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