Multiple Choice Questions

Advertisement

The stage of cell cycle when cell has undergone differentiation is :

  • G0

  • G1

  • G3

  • G4


A.

G0

G0 is the phase which undergoes differentiation. It is also known as quiscent phase.


Advertisement

Spindle fibres of mitotic cell are made up of

  • tubulin

  • actin

  • myosin

  • collagen


Which of the followings does not occur in the interphase of eukaryotic cell division?

  • Increase of ATP synthesis

  • Increase of DNA synthesis

  • Increase of RNA synthesis

  • Reduction in cell size


Match the item in column I with those in column II and the choose the correct answer.

Column I Column II
A. Mitosis 1. Occurs in diploid cells only
B. Meiosis 2. Occurs in both haploid and diploid cells
  3. Daughter and parent cells have same chromosome numbers
  4. Synapsis of homologous chromosomes.

  • A- 1; B- 2

  • A- 2; B- 3

  • A- 3; B- 4

  • A- 4; B- 1


In cell cycle, during, which phase chromosomes are arranged in equatorial plate ?

  • Metaphase

  • Anaphase

  • Telophase

  • Prophase


Advertisement

During meiosis crossing over occurs at

  • pachytene

  • zygotene

  • leptotene

  • diakinesis


During meiosis crossing over occurs between which part of homologous chromosome ?

  • Sister chromatids

  • Non-sister chromatids

  • Genes

  • Alleles


In synapsis two homologous chromosomes are connected at

  • centromeres

  • chromomeres

  • telomeres

  • none of these


Stages in proper sequence of prophase- I are

  • zygotene, leptotene, pachytene, diakinesis

  • leptotene, zygotene, pachytene, diplotene and diakinesis

  • eptotene, pachytene, zygotene, diakinesis and diplotene

  • diplotene, diakinesis, pachytene, zygotene and leptotene


Advertisement
<

During mitosis nuclear membrane disappears at

  • early prophase

  • late prophase

  • metaphase

  • anaphase


Advertisement