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GREGOR MENDEL
Began researching inheritance. Mendel recognised a pattern of inheritance in offspring from parents, this lead him to being able to predict ratios and formulate principle of inheritance which became known as Mendel’s Laws. Known as ‘the Father of Genetics’ -
FRIEDRICH MIESCHER
1969 was when most of his work occurred, he isolated the nuclein, determining chemicals it was made of -
WALTER SUTTON
Discovered that chromosomes are heredity and that they are distinctively separate entities. Sutton also established that the separation of chromosomes directly related to Mendel’s Laws of inheritance. -
THEODOR BOVERI
Observed that chromosomes were not identical, they were haploid meaning sex cells (gametes) have half the number of chromosomes of normal body cells which are diploid. -
PHOEBUS LEVENE
Spent a large amount of time studying nucleic acids, publishing many different papers but he is mostly remembered by his incorrect tetranucleotide theory of DNA -
THOMAS HUNT MORGAN
Studied the behaviour of chromosomes for 17 years. Continuing to develop ideas and proof about the chromosomal theory, as well as genetic linkage, disjunction and crossing over. -
ERWIN CHARGAFF
Presented crucial facts and evidence that lead to the discovery of the DNA’s molecular structure, as well as discovering the (G+C):(T+A) ratio -
MAURICE WILKINS
Presented DNA findings through X-ray crystallography at a conference inspiring Watson’s study of DNA. -
JAMES WATSON
Collaborated with Crick building a 3-D model of DNA to discover how it works and its structure -
FRANCIS CRICK
Collaborated with Watson building a 3-D model of DNA to discover how it works and its structure -
ROSALIND FRANKLIN
Used X-ray diffraction to determine and seperate the two different kinds of ‘hydration forms’ of DNA, this allowed accurate measurements to be taken. -
LINUS PAULING
By using Watson and Crick’s method of model building, Linus was able to propose that the DNA structure had a triple-standard helix.
