©2022 Hosting Precise - All Rights Reserved
Posted on 12th Nov 2021 03:43:21 in
Question 7) How did Hershey and Chase differentiate between DNA and protein in their experiment white proving that DNA is the genetic material?
Ans: Alfred Hershey and Martha Chase (1952) worked with viruses that infect bacteria called bacteriophages. In 1952, they chose a bacteriophage known as T2 for their experimental material.
They grew some viruses on a medium that contained radioactive phosphorus (p32) and some others on medium that contained radioactive sulphur (s35). Viruses grown in the presence of radioactive phosphorus contained radioactive DNA but not radioactive protein because DNA contains phosphorus but protem does not. Similarly, viruses grown on radioactive sulphur contained radioactive protein but not radio’active DNA because DNA does not contain sulphur.
Radioactive phages were allowed to attach to E. coli bacteria. Then, as the infection proceeded, the viral coats were removed from the bacteria by agitating them in a blender. The virus particles were separated from the bacteria by spinning them in a centrifuge. ,
Bacteria which was infected with viruses that had radioactive DNA were radioactive, indicating that DNA was the material that passed from the virus to the bacteria. Bacteria that were infected with viruses that had radioactive proteins were not radioactive.
This indicates that proteins did not enter the bacteria from the viruses. DNA is therefore the genetic material that is passed from virus to bacteria.
©2022 Hosting Precise - All Rights Reserved
Hosting Precise is an innovative supplier of the web domain and hosting services. We provide responsive, fully-featured Domains and Hosting services at an affordable price. Our main objective is to offer best and reliable Hosting packages for all kind of businesses with full customer satisfaction and Domain Registrations with all extensions. Ourcustomer base encompasses all sectors and sizes, from small businesses to industry leaders. Naturally, a client base this diverse has many different requirements. We cater to these needs by offering flexible, scalable solutions - from basic hosting account to complex dedicated server clusters - on a variety of platforms. Join Hosting Precise and its vast community now and start creating trends online. We provide hosting on Linux and Windows servers, suitable for static and dynamic website whichever preferred by clients depending on their web development platforms like PHP, ASP.net, ASP, Java, etc.
Here are some of its key points:
User ratings
User ratings are of utmost importance because claiming to have an uptime over 99% is different from actually having it. So be mindful and go through the reviews before you choose.
We offer a 14 day grace period for invoice payment before the associated service is suspended for nonpayment. This 14 day period starts on the invoice due date, not on the date the invoice is issued.
Yes
You can migrate your website from some other website hosting provider to Hosting Precise.
To select the right Linux shared hosting plan for your business.
No, Our web service uptime is currently 99.99%.