Lampbrush chromosomes, Biology

LAMPBRUSH CHROMOSOMES

  1. Discovered by Ruckert.
  2. Lampbrush Chromosomes were seen in Oocytes of several different animals like shark, amphibians, reptiles and birds. (Most distinct in Diplotene stage).
  3. Giant size of these Chromosomes is due to increase in size of Chromonema (not due to number). Chromonema grows in size to form lateral loops.
  4. Synthesis of m-RNA occurs on lateral loops.
  5. Lampbrush    Chromosomes    concerned    with vitellogenesis. (Yolk formation)

572_lampbrush chromosomes.png

Posted Date: 10/8/2012 3:16:58 AM | Location : United States







Related Discussions:- Lampbrush chromosomes, Assignment Help, Ask Question on Lampbrush chromosomes, Get Answer, Expert's Help, Lampbrush chromosomes Discussions

Write discussion on Lampbrush chromosomes
Your posts are moderated
Related Questions
Glycogen is a huge polymer of glucose residues linked by α1-4 glycosidic bonds with branches every 10 residues or so by α1-6 glycosidic bonds.  Glycogen gives an significant energy

Q. Explain procedure of Aortic Valvuloplasty? BAV is usually performed by the retrograde transarterial approach. Often another catheter is placed in the LV through transseptal

Explain Spread Plate Method - Pure Culture Techniques? In this method, diluted microbial suspension containing about 30 to 300 colonies is spread uniformly on the agar surface

Animals of the open water zone The limnetic region of this zone contains certain fishes as well as rotifers, zooplankton such as crustacean and protozoan. In the profundal zo

The life of a eukaryotic cell can be explained as a cell cycle. Mitosis and cell division happens in the M phase that lasts for only about 1 h. This is followed by the G1 phase whe

Q. How is fecundation done in insects (internal or external)? Is there copulation between insects? Fecundation in insects is internal, with copulation.


????? # 100 ??????????? #Minimum ?????? ?????

The aim of earthquake-resistant structure designing The main objectives of earthquake resistant structures are as follows: (i)     To avoid loss of lives due to the destruct

Japanese encephalitis The Japanese encephalitis is a mosquito-born flavivirus infection that causes encephalitis in human and equines and abortion in pigs, caused by Japanese