DNA Scientists

If Chargaff found that a sample of DNA has 20% ADENINE, how much GUANINE would he have determined to be there?

• 30%

• 20%

• 80%

• 60%

Okazaki fragments are unified into a single continuous strand by the use of this enzyme

• DNA Helicase

• DNA Ligase

• Topoisomerase

• Telomerase

This scientist(s) found a "transforming principle" that changed harmless bacteria into harmful bacteria

• Mendel

• Avery

• Chargraff

• Griffith

Who discovered that the proportion of A is same as T and proportion of G is same as C in DNA

• Chargaff

• Hersey & Chase

• Avery, MacLeod & McCarthy

• Miescher

Who was the first to isolate nucleic acid, called it nuclein.

• Miescher

• Levene

• Griffith

• Mendell

• Chargoff

Who discovered that there are two types of nucleic acid (DNA & RNA)

• Hershey & Chase

• Avery, MacLeod & McCarthy

• Griffith

• Levene

Who described the Transforming Principle - that diseased genes can be spread to healthy individuals

• Miescher

• Griffiths

• Watson & Crick

• Chargaff

Who explained the Transforming Principle using DNA as agent of the disease

• Levene

• Franklin & Wilkins

• Avery, MacLeod & McCarthy

• Hershey & Chase

• Griffith

Who showed that DNA and not proteins were the genetic material?

• Griffith

• Avery, MacLeod & McCarthy

• Franklin & Wilkins

• Hersey & Chase

Who used X-Ray crystallography to see DNA structure?

• Franklin & Wilkins

• Watson & Crick

• Hershey & Chase

• Avery, MacLeod & McCarthy