What scientist concluded that DNA was the factor that caused one bacterium to transfer into another?

Answer 1

In 1944, Oswald Avery, Colin MacLeod, and Maclyn McCarty published a paper demonstrating that DNA was the transforming factor.

Their discovery was at first met with disbelief by some scientists, who thought that only proteins could have enough complexity to hold genetic information. Also, for a while some scientists thought bacteria might have a different genetic chemistry from other organisms.
Avery

Answer 2

Alfred Hershey and Martha Chase provided evidence in 1952 that DNA, not protein, was the genetic material responsible for one bacterium transferring its characteristics to another. Their experiments with bacteriophages demonstrated that DNA, not protein, carries the genetic information necessary for heredity and reproduction.

Answer 3

In 1927, Fredric Griffith concluded that bacteria could be transformed from harmless to disease-causing by introducing a factor that was not yet identified. This changing factor was eventually discovered to be DNA, the basis for all biological reproduction.

Answer 4

The Avery-MacLeod-McCarty experiment (sometimes simply referred as the Avery-MacLeod experiment), conducted by Oswald Avery, Colin Macleod and Maclyn McCarty, demonstrated that DNA is the substance that causes bacterial transformation in Streptococcus pneumoniae (no phage was used).

A later experiment conducted by Alfred Hershey and Martha Chase used T2 phages infecting Escharichia coli bacteria in a series of experiments (that have come to be knows as the Hershey-Chase experiments) finally proved that DNA was the genetic material.

Answer 5

Genetics Researchers, and Biologists,A.D. Chase and Martha Hershey.

Answer 6

Fredric Griffith

Answer 7

Lederberg and Tatum.

Answer 8

fredrick griffith

Answer 9

Hershey and chase

Answer 10

Avery