Science Timeline

  • 210

    Galen

    Galen
    Galen is credited for discovery of blood in human arteries and for his dissection of the human cranial nerves, the nerves that supply key areas of the head, face, and upper chest.
    http://www.greekmedicine.net/whos_who/Galen.html
  • Lamarck

    Lamarck
    Lamarck had the theory of inheritance of acquired characteristics. He believed that traits changed or acuire could be passed down to offspring.
    https://www.britannica.com/science/inheritance-of-acquired-characteristics
  • Hardy-Weinberg equation

    Hardy-Weinberg equation
    The Hardy-Weinberg equation is an algebraic equation that describes the genetic equilibrium within a population.
    www.nature.com/scitable/definition/hardy-weinberg-equation-299
  • Beagle

    Beagle
    Charles Darwin traveled to Australia and when he got there he saw Rhea birds and was very curious why they all lived in a very similar environment but looked very different.
    https://www.scientificamerican.com/article/charles-darwins-travel-beagle/
  • The Origin

    The Origin
    Charles Darwin wrote the book and came up with the theory of natural selection. Natural selection is where certain species adapt and survive better in their environment better then others.
    http://www.beinghuman.org/article/importance-charles-darwin
  • Pasteur

    Pasteur
    Pasteur did an experiment disproving that life can come from nothing, and in order for there to be life it has to come from something that also has life.
    www2.nau.edu/gaud/bio301/content/spngen.htm
  • Mendel

    Mendel
    Gregor Mendel did an experiment in an 8 year time span with pea plants keeping track of there traits and later found that genes come in pairs and are inherited as distinct units
    www.dnaftb.org/1/bio.html
  • Plasmodium falciparum

    Plasmodium falciparum
    Plasmodium falciparum is responisble for 50% off all malaria cases and is injected by female mosquitos. It is a unicelluar protozoan parasite of humans, and the deadliest species of Plasmodium that cause malaria in humans.
    https://ucrtoday.ucr.edu/19520
  • Germ theory

    Germ theory
    Microorganisms are small organisms that can invade Eukaryotic organisms and spread diseases
    www.bbc.co.uk
  • Sex linkage

    Sex linkage
    Morgan studied fruit flies and determined that traits could be passed on by the inheritance of sex chromosomes.
    https://www.nature.com/scitable/topicpage/thomas-hunt-morgan-and-sex-linkage-452
  • Bohr

    Bohr
    Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element
    https://prezi.com/3by1y809vhy9/niels-bohr-and-his-atomic-theory/
  • Frederick Griffith transformation

     Frederick Griffith transformation
    Frederick Griffith's experiment showed that bacteria were capable of transferring their genetic information by a process that he called transformation.
    https://education.llnl.gov/bep/science/10/tLect.html
  • Avery, MacLoed and McCarty

    Avery, MacLoed and McCarty
    Oswald Avery, Colin MacLeod, and Maclyn McCarty showed that DNA, and not proteins which was previously believed to transform cells, can transform the properties of cells, clarifying the chemical nature of genes.
    https://www.genome.gov/.../Online-Education-Kit-1944-DNA-is-Transforming-Principle
  • Rosalind Franklin

    Rosalind Franklin
    Rosalind Franklin's was the person responsible for seeing that DNA was composed of a double helix structure that run parallel to each other. The most famous piece of evidence is the image called Photo 51. Which depicts this structure. I remember you telling us that the men received most of the credit over Rosalind because she was a female but it is now believed that Rosalind was mainly responsible for the find.
    http://www.brighthub.com/science/genetics/articles/76072.aspx
  • Chase Hershey

    Chase Hershey
    Martha Chase and Alfred Hershey (not the chocolate) helped to confirm that DNA is genetic material.
    http://www.biology-pages.info/H/Hershey_Chase.html
  • Watson and Crick

    Watson and Crick
    Watson and Crick presented their findings for the double helix structure. It is the molecule the carries genetic information from one generation to the next.

    https://www.nobelprize.org/educational/medicine/dna_double_helix/readmore.html
  • Meselson and Stah

    Meselson and Stah
    Confirmed that DNA replication was semiconservative. The DNA consists of two helices that are combined.
  • Nirenberg

    Nirenberg
    The experiment deciphered the first of the 64 triplet codons in the genetic code by using nucleic acid homopolymers to translate specific amino acids
    https://www.nobelprize.org/educational/medicine/gene-code/history.html
  • Apollo 11 lands on the moon

    Apollo 11 lands on the moon
    On July 16, 1969 Buzz Aldrin, Neil Armstrong and Michael Collins set off in Apollo 11 heading for the moon. They landed on July, 20th with only 30 seconds of oxygen left.
    https://www.nasa.gov/mission_pages/apollo/apollo11.html
  • Margulis

    Margulis
    Lynn Margulis helped advance the study of the origins of cells. She developed the symbiotic theory, which states that bacteria played a major role in the development of living cells
    https://evolution.berkeley.edu/evolibrary/article/history_24
  • Spliceosome

    Spliceosome
    Ok so Spliecosomes are a very complicated machine found within the splicing speckles of the cell nucleus of eukaryotic cells it removes introns from transcribed pre-mRNA. Richard J. Roberts and Phillip Sharp were credited with the discovery.
    https://en.wikipedia.org/wiki/Spliceosome
  • Sanger Technique

    Sanger Technique
    Sanger sequencing, is a technique for DNA sequencing based upon the selective incorporation of chain-terminating dideoxynucleotides by DNA polymerase during in vitro DNA replication.
  • Hydrothermal vents

    Hydrothermal vents
    Hydrothermal vents were found in 1977 and they found a thriving ecosystem there as well that were linked to archaea organism which is now believed to be the oldest organism on the planet, even possibly predating the sun.
    https://www.nationalgeographic.org/media/deep-sea-hydrothermal-vents/
  • Polymerase Chain Reaction

    Polymerase Chain Reaction
    A technique used to take a piece of DNA and make many copies of it. This technique is very similar to the natural process which cells use to make new copies of DNA, but it is also a little different.
    ase.tufts.edu/chemistry/hhmi/.../PCR_Reworked_COOP_suggestions_Aug2011.docx
  • The Innocence Project is founded

    The Innocence Project is founded
    So i thought when i first saw The Innocence project it was a mistake, but then I am assuming you want us to mention the importants of it because DNA has changed to much and now the can go back and test to see if some prisoners are indeed innocent.
  • CRISPR-Cas9

    CRISPR-Cas9
    CRISPR-Cas9 is technology that enables geneticists and medical researchers to change parts of the genome by taking way, adding or altering sections of the DNA sequence. It is currently the simplest, most versatile and precise method of genetic manipulation.
  • Dolly

    Dolly
    Dolly the sheep was successfully cloned and was the first successful clone. The technique that was made famous by her birth is somatic cell nuclear transfer, in which a cell is placed in a de-nucleated ovum, the two cells fuse and then develop into an embryo.
    https://www.sciencedaily.com/terms/dolly_the_sheep.htm
  • Toumaï

    Toumaï
    A 6 to 7 million year old humanoid skull was found in the desert of Chad. It is thought to be the oldest found thus far and helped scientist fill in a large, empty, unknown. I'm not a scientist but it just looks like a monkey. gap.https://www.smithsonianmag.com/science-nature/sahelanthropus-tchadensis-ten-years-after-the-disocvery-2449553/
  • Human Genome Project

    Human Genome Project
    The Human Genome Project's goal was to find all of the DNA 3 billion DNA base pairs that make up the human genome. This project 13 years and $1 billion dollars! Those are some expensive genes.
    https://www.genome.gov/12011238/an-overview-of-the-human-genome-project/
  • Richard L Bible execution

    Richard L Bible execution
    Richard L Bible was executed by lethal injection in flagstaff Arizona. The Bible case introduced a new technology, DNA analysis, to match the blood found on Bible's shirt to the victim and helped in finding him guilty.
    http://www.abc15.com/news/crime/death-row-diaries-the-first-use-of-dna-technology-in-an-arizona-murder-case