INT 1 Task 1
Part One
Changes in DNA
Understanding - a
Continuing Process
INT - Task 1
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
1700’s - it is believed that all traits are acquired.
Example - a giraffe has a long neck due to stretching to reach the leaves in the taller trees.
1800’s - Carl Linnaeus classified by visible traits.
1866 - Gregor Mendel, through pea plant breeding and research; discovered that traits are inherited not acquired- before anyone knew or understood anything about “genes”. He published what he discovered as the “principles of inheritance” - however, his ideas were not recognized for over 30 years.
1900’s - Mendel’s experiments are rediscovered, confirmed by three researchers and his paper’s are translated into English and lead to new experimental methods.
1900’s - begins the conflict over DNA or protein being the genetic material. 1905 - William Bateson is given credit for coining the word “genetics”.
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
●
1941 - Beadle and Tatum describe the theory that one gene encodes one protein. 1953 - James Watson & Francis Crick (using Rosalind Franklin’s work) discover DNA and the structure of it.
1957 - Kornberg produces DNA in a test tube.
1950’s to 60’s - Discovery of genetic diseases.
1970’s - classification by DNA starts, replacing classification by visible traits. 1980’s - Barbara McClintock discovered that genes are able to change positions on chromosomes.
1990’s - DNA is used in Forensics and medicine.
Example - Portland, Oregon has first crime conviction due to DNA fingerprinting. OJ Simpson trial makes DNA forensics big news.
Example - Humulin - insulin replacement of the pig (or other animal insulin) being used up to this time. Also, Gene Therapy used for first time - on a 4 year old girl for ADA (Boy in the Bubble Disease).
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
1994 - FlavrSavr tomatoes are created - they taste better and last longer.
1996 -
Changes in DNA
Understanding - a
Continuing Process
INT - Task 1
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
1700’s - it is believed that all traits are acquired.
Example - a giraffe has a long neck due to stretching to reach the leaves in the taller trees.
1800’s - Carl Linnaeus classified by visible traits.
1866 - Gregor Mendel, through pea plant breeding and research; discovered that traits are inherited not acquired- before anyone knew or understood anything about “genes”. He published what he discovered as the “principles of inheritance” - however, his ideas were not recognized for over 30 years.
1900’s - Mendel’s experiments are rediscovered, confirmed by three researchers and his paper’s are translated into English and lead to new experimental methods.
1900’s - begins the conflict over DNA or protein being the genetic material. 1905 - William Bateson is given credit for coining the word “genetics”.
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
●
1941 - Beadle and Tatum describe the theory that one gene encodes one protein. 1953 - James Watson & Francis Crick (using Rosalind Franklin’s work) discover DNA and the structure of it.
1957 - Kornberg produces DNA in a test tube.
1950’s to 60’s - Discovery of genetic diseases.
1970’s - classification by DNA starts, replacing classification by visible traits. 1980’s - Barbara McClintock discovered that genes are able to change positions on chromosomes.
1990’s - DNA is used in Forensics and medicine.
Example - Portland, Oregon has first crime conviction due to DNA fingerprinting. OJ Simpson trial makes DNA forensics big news.
Example - Humulin - insulin replacement of the pig (or other animal insulin) being used up to this time. Also, Gene Therapy used for first time - on a 4 year old girl for ADA (Boy in the Bubble Disease).
Understanding Genetics a
Timeline of DNA Science
●
●
●
●
●
●
1994 - FlavrSavr tomatoes are created - they taste better and last longer.
1996 -
Citations: References Robert Tilling, & American Geological Institute (2000, May) Helens 20 Years Later: What We 've Learned. Retrieved September 16, 2013, from http://www.agiweb. www.fs.fed.us/pnw/lwn/aem/projects/mt_st_helens.html USDA Forest Service (2004, December 13) Erupted? Retrieved September 16, 2013, from www.sciencedaily.