12.1 Identifying the Substance of Genes

Slides:



Advertisements
Similar presentations
DNA Section 12–1.
Advertisements

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 12-1.
12.1 Identifying the Substance of Genes
1 Review List the conclusions that Griffith and Avery drew from their experiments Identify Variables What experimental variable did Avery use when he.
12.1 Identifying the Substance of Genes
12-1 DNA.
“The Blueprint of Life”
Section * 1928 British scientist – Frederick Griffith * Wanted to know how bacteria made people sick, especially pneumonia * Griffith isolated 2.
Copyright Pearson Prentice Hall
12.1 Identifying the Substance of Genes
DNA
Identifying the Substance of Genes
Life Cycles of Viruses.
12.1 Identifying the Substance of Genes
Bacteria Reproduction: Not quite the same!. What type of cells are bacteria? Prokaryotic cells: Single celled Have a single strand of DNA and some plasmids.
12.1 Identifying the Substance of Genes
Essential knowledge 3.C.3:
Lesson Overview 12.1 Identifying the Substance of Genes.
THE ROLE OF DNA AND BACTERIA. DO NOW 4 minutes and 27 seconds to write down 5 things from last class Do NOT use your notes.
NOTES: DNA (History; Identifying the Substance of Genes)
12.1 Identifying the Substance of Genes
12.1: Identifying the Substance of Genes.  Investigating bacteria and pneumonia  S strain: mouse dies of pneumonia  R strain: mouse lives  Heat-killed.
Objectives 12.1 Identifying the Substance of Genes -Summarize the process of bacterial transformation. -Describe the role of bacteriophages in identifying.
Lesson Overview Lesson Overview Identifying the Substance of Genes Green Parakeets After consulting with the owner of the pet store, Susan realized she.
Two Cycles and A Bit of Review Remember that viruses are not able to reproduce on their own. They rely on a ‘host cell’ for reproduction In the Lytic Cycle.
Chapter 12- DNA EQ: How did we discover DNA was the most important in our bodies and what is does?
Chapter 8: DNA and RNA Section 8-1: Discovering DNA.
Chapter 12: DNA Lab Biology CP. Chapter 12: DNA 12.1 Identifying the Substance of Genes 12.2 The Structure of DNA 12.3 DNA Replication.
Viruses, Bacteria, Protists, and Fungi Chapter Seven: Viruses.
Review What do viruses depend on for their reproduction
12.1 Identifying the Substance of Genes
Unit 8 – DNA Structure and Replication
12.1 Identifying the Substance of Genes
Unit 1: “Get a Life” Chapters 7 and 19
Random fact Certain types of cancers have been linked to cancer viruses. Burkitt's lymphoma, cervical cancer, liver cancer, T-cell leukemia and Kaposi.
Identifying the Substance of Genes (12.1)
Lesson Overview 12.2 The Structure of DNA.
12.1 Identifying the Substance of Genes
Bellwork: What is a bacteriophage
Section 12-1: Identifying The Substance of Genes
How do genes control what you look like?
Discovering DNA.
12.1 Identifying the Substance of Genes
Warm Up 1 DNA is made up of Amino acids c. nucleotides
12.1 Identifying the Substance of Genes
12.1 Identifying the Substance of Genes
Griffith finds a ‘transforming principle.’
DNA: The Genetic Material
What is transformation? Who studied transformation?
12.1 Identifying the Substance of Genes
Chromosomes & DNA Replication
Essential knowledge 3. C. 3: youtube. com/watch
DNA Replication Learning Outcome B5.
Biotechnology Part 1 Genetics of Viruses
Chapter 12 DNA.
12.1 Identifying the Substance of Genes
Arianna K. Olivia J. Willow G.
Lesson: Discovery of DNA Key Questions:
Griffith finds a ‘transforming principle.’
Ch.12-1 Identifying the Substance of Genes
Biotechnology Part 1 Genetics of Viruses
What are genes made of and how do they work?
Virus Notes.
Viruses.
Virus A pathogen that consists of a Nucleic Acid – (DNA or RNA) wrapped in a Protein Coat- (Capsid). Classification: Classified by the host Bacteriophage.
Chapter 17: Viruses and Bacteria
Viruses.
Chapter 17: Viruses and Bacteria
Presentation transcript:

12.1 Identifying the Substance of Genes Lesson Overview 12.1 Identifying the Substance of Genes

The Role of DNA What is the role of DNA in heredity? The DNA that makes up genes must be capable of storing, copying, and transmitting the genetic information in a cell.

The Role of DNA The DNA that makes up genes must be capable of storing, copying, and transmitting the genetic information in a cell.

Storing Information The foremost job of DNA, as the molecule of heredity, is to store information. Genes control patterns of development, which means that the instructions that cause a single cell to develop into an oak tree, a sea urchin, or a dog must somehow be written into the DNA of each of these organisms.

Copying Information Before a cell divides, it must make a complete copy of every one of its genes, similar to the way that a book is copied.

Copying Information To many scientists, the most puzzling aspect of DNA was how it could be copied. Once the structure of the DNA molecule was discovered, a copying mechanism for the genetic material was soon put forward.

Transmitting Information When a cell divides, each daughter cell must receive a complete copy of the genetic information. Careful sorting is especially important during the formation of reproductive cells in meiosis. The loss of any DNA during meiosis might mean a loss of valuable genetic information from one generation to the next.

Bacteriophages The kind of virus that infects bacteria is known as a bacteriophage, which means “bacteria eater.” When a bacteriophage enters a bacterium, it attaches to the surface of the bacterial cell and injects its genetic information into it. The viral genes act to produce many new bacteriophages, which gradually destroy the bacterium. When the cell splits open, hundreds of new viruses burst out.

YouTube Video