Bio 111 - Tag Exam 2 SCIENTISTS ONLY

TAMU - scientists from Chapter 14,10,15

Watson and Crick

were the scientists who proposed the double helix structure of DNA in 1953, revealing how genetic information is stored and replicated.

Fredrick Griffith

Discovered transformation using mice

Avery , Macleod, and McCarty

expanded on Griffith's work by demonstrating that DNA is the substance responsible for transformation, thus identifying it as the genetic material.

Hershey and Chase

Using bacteriophages, they confirmed that DNA, not protein, was the genetic material in cells by testing phosphorus and sulfur

Erwin Chargaff

Discovered that A&T % + C&G% equals 100%

Maurice Wilkins and Rosalind Franklin

Used x-ray crystallography to determine the shape and that A bonds with T and G bonds with C

Elizabeth Blackburn

Discovered the telomere (extra base pairs at the end that are used to protect the DNA)