what is interphase.explain briefly?

Asked by mohameedraza8558 | 5th Sep, 2015, 06:31: PM

Expert Answer:

  • Interphase involves a series of changes which take place in a newly formed cell and its nucleus before it gets ready for division again. It is also called intermitosis.
  • Interphase generally accounts for 95% of the total duration of the cell cycle. It is the preparatory phase and a period of great metabolic activity. 

  • In this stage, the nucleus and the cytoplasm remain metabolically and synthetically very active.
  • During this phase, DNA replication, synthesis of nuclear histones, division of centrioles to form a new pair of centrioles, synthesis of energy-rich compounds and synthesis of RNA and proteins take place.
  • The nuclear envelope remains intact.
  • Chromosomes appear in the form of long, coiled, indistinctly visible chromatin fibres.
  • The size of the nucleolus increases because of the accumulation of rRNA and ribosomal proteins. 
  • Interphase is further divided into three periods—first gap or G1 phase, synthetic or S phase and second gap or G2 phase. Duration of these phases is different in different organisms.

Answered by Sheetal Kolte | 6th Sep, 2015, 06:48: PM