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Charles Darwin created the theory of natural selection. It is not a testable hypothesis.
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Mendel came up with the laws of inheritance. Saying traits are dominant to others.
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Francis Galton undertook studies of how various traits might be transmitted from parent to offspring. His early experiments, in which he injected rabbits with blood drawn from other rabbits of different colored coats
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m , ,mNoticed cells seperate into strings. Known as chromosomes.
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Chromposomes remain organized. He was inspired by the description of them.
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The first expierimnt that concluded that bacteria could transfer genetic information. It is called transformation.
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George Beadle and Edward Tatum showed that there was a realationship beteween genes and proteins.
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Avery discovers deoxyribonucleic acid. He injected mice with a leathal and nonleathal virus and saw what happened
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Linus Pauling discovered that many protiens look like aplha helxies. They are not proteins.
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Ewrin Chargaff discovers that the ratio of adenine to thymine and cytosine to guanine is one to one. This was an important clue into solving the structure of DNA.
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Confirmed DNA is genetic material. They showed that when bacteriophages enter bacteria their DNA enters but their protiens do not.
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After 3 years of reseach Franklin concluded that DNA forms had 2 helices.
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Watson and Crick discover DNA.
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They imaged the order of nucleotides. Deciphered the genetic code and could spell out amino acids in protiens.
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An effort to sequence the human genome was made in to 1980s. The analysis of DNA could power biological investigation.
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The first mamal to be cloned. A clone is identicaly similar to its parent.
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Celera Gentics announced the completion of a draft mouse genome. They found 14 genes on a mouse chromosome.
