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Dunaliella salina - Overview

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                 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...

Mendel work , Basic Principles of Genetics(Part 2)

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Link of Basic terminology of Genetics  (part1) " Father of Genetics: Mendel" **He wa Born on 22July 1822 **He Graduate in physics and post graduate in economics.Monk in a monastry. **He   Devoted 12 years for hybridisation experiments. **Heworked on Pisum   sativum  for 7 years. **He published his findings in the form of a research paper named " Experiments of Plant Hybridisation"   in "Natural history of Science Society Brunn,Austria". **He died due to Kidney disorder in  1884 . ** Mendel also worked om Hieracium(Hawk weed) and Lab Lab (broad bean) but failed to get same result as in Pisum   sativum. **Pea was also selected by Gross and Knight as an experimental tool,but they faip to explain genetics.          Rediscovery of Mendelism By 1)  Carl Correns (germany) He worked on Mirabilis   jalapa    and Antirrhinum   majus 2)  Isthermark (Australia) He worked on Pisum   sativum 3) Hugo de...