Hershey chase experiment

The final proof as DNA as genetic material came from the experiment of

• Griffith

• Hershey and chase

• Avery, Mcleod, & McCarty

• Hargovind khorana

Bacteriophages are

• Viruses

• Bacteria

• Prions

• Viroids

Who discovered Bacteriophages

• Watson& Crick

• Felix d Herelle

• Laderberg

• Harshey & Chase

Transformation is

• Formation of DNA from DNA

• Formation of mRNA from DNA

• Foreign DNA entryby Virus

• Genetic alteration of a cell

Transduction is

• Formation of DNA from DNA

• Formation of mRNA from DNA

• Formation of Protiens from mRNA

• foreign DNA entry by Virus

T2 bacteriophage contains-

• 50%DNA+50%protein

• 60%DNA+40%protein

• 25%DNA +75%Protein

• 75% DNA+25% Protein

In Hershey Chase exp.,Protein tagging was done by-

• Radioactive Phosphorus P37

• Radioactive sulphur S 34

• radioactive sulphur 35 S

• radioactive Phosphorus 32 P

In Blender exp.,DNA tagging was done by-

• Radioactive phosphorus P 37

• Radioactive sulphur S 34

• Radioactive sulphur S 35

• Radioactive Phosphorus 32 P

Hershey-Chase exp.confirms that-

• DNA is always formed from DNA in semiconservative manner.

• Sulphur and Protein both enter in bacterial cell progeny.

• DNA is genetic material,not protein.

• Radioactive Phosphorus was only found in surrounding.

Tags

NGSS.HS-LS1-1

The Bacteria used for confirmation of DNA was-

• Staphylococci

• E.coli

• Salmonella typhimurium

• Clostridium tetani