Chapter 5.0 BIOL- 1703-01
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14 Terms
What was the issue that happened in 1953 with the discovering of the DNA structure?
Roslin Franklin was trying to double cheking her work when Franklin share the picture of Watson used her work without her permission, winning a noble prize for the DNA structure and model of double helix
What year was discover the structure of DNA and by who?
Watson,
Crick,
Franklin,
Wilkins
(!953)
What’s the semi-conservation replication?
it refers of how each strand [of DNA] serves as a template to make a new double helix in DNA
Who was Ernest Everett Just?
the first to conceptualize epigenetics: the environment contributes to how the information in DNA becomes physical characteristics of an organism
What Fredick Griffith realized?
Living pathogens would somehow survided and live inside of rats and kill the rats
What Avery McCarty and Macleod did? (1948)
by fractionating a cell-free they realized R-strain could be transformed with DNA extracts from dead S-strain
Who was Gregol Mendel?
revealed that heredity is the result of discrete units of inheritance
Who was Nettie MAria Stevens?
she discovered sex chromosomes in mealworms which would later be termed “X” and “Y” chromosomes (1905)
Who was Wilhelm Ludvig Johannsen?
Danish scientist who coined the term gene to refer to the unit or particle of inheritance. (1903)
Who was Archibald Garrod?
identifies alkaptonuria as a heritable genetic disease that follows Mendel’s laws. Alkaptonuria - “black urine” - inborn error of metabolism
Who was Ernest Everret Just?
he was the first to conceptualize epigenetics: the environment contributes to how the information in DNA becomes physical characteristics of an organism
Thomas Hunt Morgan
An American geneticist, he discovered that certain mutations were inherited together (linked)
What is the biochemical basis of heredity?
The 1918 flu (H1N1 virus) “The Spanish
Majority of deaths resulted from secondary infections of Streptococcus pneumoniaeFlu”
What are the two strains of Streptococcus pneumoniae?