In this presentation, explore the fascinating world of cell heredity material. Dive into the fundamental concepts of genetics, DNA, and how cells transmit genetic information. Gain insights into the building blocks of life and the role they play in inheritance. Join us on a journey through the intricate pathways of heredity within the cell. Don't miss this opportunity to enhance your understanding of one of the core aspects of biology.

1. CELL CONTAINS HEREDITY
MATERIAL
PRESENTED BY TANZILA MALLICK DOA
ROLL : 1494
REGISTRATION : 1497
DEPARTMENT OF PHARMACY
FACULTY OF BASIC MEDICAL AND PHARMACEUTICAL SCIENCE
UNIVERSITY OF SCIENCE AND TECHNOLOGY CHITTAGONG (USTC)

2. CONTENT
• WHAT IS HEREDITY?
• WHAT IS HEREDITARY MATERIAL?
• REQUIREMENTS FOR A HEREDITY MATERIAL
• DNA
• GENE
• DISCOVER OF DNAAS THE HEREDITARY MATERIAL.
• FREDERICK GRIFFITH EXPERIMENT
• STEPS AND RESULT OF THE EXPERIMENT
• CONCLUSION

3. WHAT IS HEREDITY?
The passing of traits from parent to offspring
REF: Galton, F., 1873. Hereditary Improvement. The Eclectic Magazine of Foreign Literature, Science, and Art, 17, pp.296-307
3

4. WHAT IS HEREDITARY MATERIAL?
The genetic material of a cell refers
to those materials found in the
Nucleus, Mitochondria and
Cytoplasm, which play a
fundamental role in determining the
structure and nature of cell
substances, and capable of self –
propagating and variation.
REF: Crick, F.H., 1954. The structure of the hereditary material. Scientific American, 191(4), pp.54-61.
CELL

5. Requirements for a hereditary material
Must carry the
information
(cracking the genetic
code)
Must self replicate
(DNA replication)
Must allow for
information to
change (Mutation)
Must govern the
expression of the
phenotype ( Gene
function)
REF: Crick, F.H., 1954. The structure of the hereditary material. Scientific American, 191(4), pp.54-61.

6. The hereditary material in a cell is DNA, which is
organized into chromosomes in the nucleus.
Genes are specific segments of DNA that carry
instructions for various traits.
REF: Crick, F.H., 1954. The structure of the hereditary material. Scientific American, 191(4), pp.54-61.

7. DNA
• THE HEREDITARY MATERIAL
• POLYMAR OF DEOXYRIBO
NUCLEOTIDE
• DOUBLE HELIX
• NUCLEOTIDE
• BASE PAIRING RULES
REF: Crick, F.H., 1954. The structure of the hereditary material. Scientific American, 191(4), pp.54-61
DNA DOUBLE HELIX

8. GENE
• A gene is the basic physical and
functional unit of heredity. Genes
are made up of DNA.
GENE
REF: O'Connor, C., 2008. Isolating hereditary material: Frederick Griffith, Oswald Avery, Personal Hershey, and Martha Chase. Nature Education, 1(1), p.105.

9. DISCOVERY OF DNAAS THE
HEREDITARY MATERIAL
• The search for genetic material
began in the mid-19th century after
Mendel discovered the principles of
inheritance. Scientists focused on
chromosomes but the material
responsible for inheritance remained
unknown. It took time for DNA to be
accepted as the genetic material, and
the Griffith experiment played a key
role in demonstrating genetic
transformation.
REF: O'Connor, C., 2008. Isolating hereditary material: Frederick Griffith, Oswald Avery, Personal Hershey, and Martha Chase. Nature Education, 1(1), p.105.
FREDERICK GRIFFITH

10. FREDERICK GRIFFITH
EXPERIMENT
Griffith's experiment with Streptococcus
pneumoniae bacteria showed two types:
smooth (S) with a mucous coat and
rough (R) without it. This experiment
was an important milestone in the
discovery of genetic material.
REF: O'Connor, C., 2008. Isolating hereditary material: Frederick Griffith, Oswald Avery, Personal Hershey, and Martha Chase. Nature Education, 1(1), p.105.
MICE

11. STEPS AND RESULT
SOURCE : INTERNET

12. CONCLUSION
In conclusion, the Griffith experiment with
Streptococcus pneumoniae bacteria played a significant
role in the discovery of genetic material. It demonstrated
that the cell contains hereditary material, which we now
know as DNA. This groundbreaking experiment paved
the way for further research and understanding of
inheritance and genetics

13. REFERENCES
• Galton, F., 1873. Hereditary Improvement. The Eclectic Magazine of
Foreign Literature, Science, and Art, 17, pp.296-307.
• O'Connor, C., 2008. Isolating hereditary material: Frederick Griffith,
Oswald Avery, Personal Hershey, and Martha Chase. Nature
Education, 1(1), p.105.
• Crick, F.H., 1954. The structure of the hereditary material. Scientific
American, 191(4), pp.54-61.

14. THANK YOU