Posts

Showing posts with the label #Robertsonian translocation

Dunaliella salina - Overview

-
Image
                 Dunaliella salina Dunaliella salina is a unicellular microalgae belong to division Chlorophyta . It is found in salinity environments such as salted brines, salt evaporation ponds, and hypersaline lakes  .It is able to tolerate varying NaCl concentrations, ranging from 0.2% to approximately 35% . Thus, Dunaliella salina is a hyper-halotolerant organism found in high densities in saline lakes.  The ability to tolerate high salt concentrations is advantageous, since competition is minimal in high salt concentration areas.  How D.salina   tolerate high salt concentration? D. salina has adapted to survive in high salinity environments by accumulating glycerol to balance osmotic pressure. Note :  D. salina is also adapted to solar radiation using β-carotene to protect against ionizing energy.                 Red Colour of Salt Brines  Dunaliella salina...
Post a Comment
Read more

Roberstsonian translocation

-
Image
What is Roberstsonian translocation? A Robertsonian translocation results when the long arms of two acrocentric chromosomes fuse at the centromere and the two short arms ar e  lost . It  is  the most common form of chromosomal translocation in humans . About 1 in 1,000 people are born with a r obertsonian translocation.           Image source: Google                              Symptoms The condition does not necessarily cause any symptoms, but some people with it may face difficulties having a family. People who carry the abnormality, however, may pass it on to their children. Aspiring parents may wish to seek genetic counseling before starting a family.                               Examples Long   arms of chromosomes 13 and 14 fuse, no significant genetic material is lost—and the person is...
Post a Comment
Read more