Question

1.  Transformation                    ______7.  Temperate                                        

______2.  Conjugation                          ______8. Lagging strand of DNA

                                                                        

______3. Franklin and Wilkins               ______9. Watson and Crick

______4. DNA helicase                          ______10. Messelsohn-Stahl

______5.  Chase and Hershey                ______11.  Leading strand of DNA                     

______6.  DNA ligase                             ______12.  DNA polymerase

Answer 1

1.Tranformation-Insert the new DNA into bacteria or forgien DNA is transferred into the host cell.it is process by genetiec alteration can be posible. can be posible in bacteria ,fungi,plant cell,animal cell.

2.Conjugation-Conjugation is the process by which transfers of genetic material in to two lower organisms of the same species some example are bacteria,some algae,fungi.

3.franklin and wilkins-They used optical spectroscopy to study DNA.they first time observed crystalline X-ray diffraction patterns from DNA fibres. jointly received the Nobel Prize for their achievement in 1953.

4.DNA helicase- Helicases are a class of enzymes.these enzymes are discovered in E.coli.they can be described as DNA unwinding enzyme.they olay important role in DNA replication.DNA helicase unwind the double helix of DNA to breaking the hydrogen bonds.

5.chase and hershey- Hershey and Chase experiment gave the evidence that DNA is genetic material not protein is genetic material.Hershey and Chase done their experiment on E. coli, and a bacteriophage

^.DNA ligase- DNA ligase is a specific type of enzyme which help in joining joining of DNA strands together formation of a phosphodiester bond in DNA replication.they play important role in DNA repair .

7. Temperate-Temperate region ocuurs between tropics and the polar regions of Earth.

8. Lagging strand of DNA- Grows discontinuously in DNA replication. second strand of dna helix direction is 5' to 3'.forming of okazaki fragments.

9. Watson and Crick-they discovered double helicle model of DNA.

10. Messelsohn-Stahl-They gave experimental proof of semiconservative replication of DNA. they supported Watson and Crick's hypothesis.

11. Leading strand of DNA - Grow continuously by DNA polymerase enzymedirection is 3' to 5'.             

12.  DNA polymerase- DNA polymerase is which enzyme synthesizes DNA molecules from deoxyribonucleotides.they play important role in DNA replication. they are building blocks of DNA in dna replication.