Presentation is loading. Please wait.

Presentation is loading. Please wait.

8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments.

Published byEmily Carr Modified over 8 years ago

Similar presentations

Presentation on theme: "8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments."— Presentation transcript:

1 8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments.

2 8.1 Identifying DNA as the Genetic Material Griffith finds a ‘transforming principle.’ Frederick Griffith experimented with the bacteria that cause pneumonia. He used two forms: the S form (deadly) and the R form (not deadly). Some material was transferred (passed) from dead S bacteria to live R bacteria, making them deadly.

3 8.1 Identifying DNA as the Genetic Material Avery identified DNA as the transforming principle. Avery isolated and purified Griffith’s transforming principle. Avery performed three tests on the transforming principle. –Qualitative tests showed DNA was present. (no protein) –Chemical analysis showed the chemical makeup matched that of DNA. –Enzyme tests showed only DNA-degrading enzymes stopped transformation.

4 8.1 Identifying DNA as the Genetic Material Hershey and Chase confirm that DNA is the genetic material. Hershey and Chase studied viruses that infect bacteria (bacteriophages). Tagged DNA was found inside the bacteria; tagged proteins were not. – They tagged viral proteins with radioactive sulfur. –They tagged viral DNA with radioactive phosphorus. –

Download ppt "8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments."

Similar presentations

DNA Section 12–1.

DNA Section 12–1.
Introduction to DNA (Deoxyribonucleic acid). Questions at the beginning of the 20th Century How do genes work? What are they made of, and how do they.

Introduction to DNA (Deoxyribonucleic acid). Questions at the beginning of the 20th Century How do genes work? What are they made of, and how do they.
DNA The Genetic Material.

DNA The Genetic Material.
8.1 Identifying DNA as the Genetic Material

8.1 Identifying DNA as the Genetic Material
10.1 DNA: The Hereditary Material

10.1 DNA: The Hereditary Material
Historical timeline of discovering DNA

Historical timeline of discovering DNA
8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments.

8.1 Identifying DNA as the Genetic Material KEY CONCEPT DNA was identified as the genetic material through a series of experiments.
History of DNA Discovery CH 11 Section 1. History of DNA Discovery ► British biologist Frederick Griffith discovered “transforming factor” when doing.

History of DNA Discovery CH 11 Section 1. History of DNA Discovery ► British biologist Frederick Griffith discovered “transforming factor” when doing.
End Show Slide 1 of 37 Copyright Pearson Prentice Hall 12–1 DNA.

End Show Slide 1 of 37 Copyright Pearson Prentice Hall 12–1 DNA.
Deoxyribonucleic Acid

Deoxyribonucleic Acid
1 Review List the conclusions that Griffith and Avery drew from their experiments Identify Variables What experimental variable did Avery use when he.

1 Review List the conclusions that Griffith and Avery drew from their experiments Identify Variables What experimental variable did Avery use when he.
Mendel’s Experiments Gregor Mendel was an Austrian monk who conducted experiments on pea plants Mendel’s experiments answered many questions, but.

Mendel’s Experiments Gregor Mendel was an Austrian monk who conducted experiments on pea plants Mendel’s experiments answered many questions, but.
How does DNA contain the instructions for life?. Griffith demonstrates Transformation Griffith experimented with the bacteria that cause pneumonia. He.

How does DNA contain the instructions for life?. Griffith demonstrates Transformation Griffith experimented with the bacteria that cause pneumonia. He.
Copyright Pearson Prentice Hall. Griffith and Transformation  1928, British scientist Fredrick Griffith was trying to learn how certain types of bacteria.

Copyright Pearson Prentice Hall. Griffith and Transformation  1928, British scientist Fredrick Griffith was trying to learn how certain types of bacteria.
Hershey and Chase confirmed that DNA, and not protein, is the hereditary material.

Hershey and Chase confirmed that DNA, and not protein, is the hereditary material.
 What do you know about Gregor Mendel?  Considered the Father of Genetics  Worked with Pea plants and discovered that gene inheritance follows certain.

 What do you know about Gregor Mendel?  Considered the Father of Genetics  Worked with Pea plants and discovered that gene inheritance follows certain.
“The Blueprint of Life”

“The Blueprint of Life”
Section 12.1. * 1928 British scientist – Frederick Griffith * Wanted to know how bacteria made people sick, especially pneumonia * Griffith isolated 2.

Section * 1928 British scientist – Frederick Griffith * Wanted to know how bacteria made people sick, especially pneumonia * Griffith isolated 2.
How do we know DNA is the genetic material 12-1 DNA.

How do we know DNA is the genetic material 12-1 DNA.
12.1 Identifying the Substance of Genes

12.1 Identifying the Substance of Genes

Similar presentations

Ads by Google