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Harvey established his ideas and experimental observations in a 72 page book
The discovery of "Blood Circulation "is one of the greatest scientific discoveries of all times. However, myths and beliefs such as the concept of arteries containing air, the perforation of the interventricular septum and many others, had to be progressibly discarded starting with Galen -
The discovery of the cell would not have been possible without the microscope. Interested in learning more about the microscopic world, Robert Hooke improved the microscope in 1665, used three lenses and a light. These allowed Hooke to see something wondrous when he placed a piece of cork under the microscope. Watch this tiny and unseen world . To him, the cork looked as if it was made of tiny pores, which he came to call “cells” because they reminded him of the cells in a monastery. -
http://seaentomologia.org/Publicaciones/
PDF/BOLN44/596_BSEA44Precursores19Swanmerdan.pdf -
In 1740 Pierre Louis Moreau spoke of natural selection; and in 1790 Immanuel Kant mentioned the sole predecessor.
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Joseph Priestley had already discovered that a plant could restore “goodness” to the air in a closed vessel. Ingenhousz’s contribution was to show that the key factors in this process were sunlight, and the green parts of the plant. When a green plant was exposed to the sun, it respired good air; in the darkness, it gave off carbon dioxide just like animals did. -
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All living creatures are made of cells, this idea was not proven until 1824 when Henri Dutrochet. Additionally, cell theory includes the idea that a new cell arises when one cell divides into two. -
Enzymes are large proteins that help generate chemical reactions. The first to be discovered was amylase, which is responsible for converting starch into sugar. Anselme Payen found it -
Martinus Beijerinck was the first to realize that the problem was not just bacteria, but also viruses. -
The Law of Segregation: Each inherited trait is defined by a gene pair. Parental genes are randomly separated to the sex cells so that sex cells contain only one gene of the pair.
2) The Law of Independent Assortment: Genes for different traits are sorted separately from one another
3) The Law of Dominance: An organism with alternate forms of a gene will express the form that is dominant. -
It's generally recognized that chromosomes were first discovered by Walther Flemming in 1882.the broader scientific context within which Darlington worked, although comprehensive, seems sketchy. It seems clear that Harman's interests lie primarily in the third and fourth parts of this work, where the prose is decidedly easier to follow. -
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The human ABO blood groups were discovered by Austrian-born American biologist Karl Landsteiner in 1901. Landsteiner found that there are substances in the blood, antigens and antibodies, that induce clumping of red cells when red cells of one type are added to those of a second type. He recognized three groups—A, B, and O—based on their reactions to each other. A fourth group, AB, was identified a year later by another research team. -
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Homeostasis says that organisms can regulate their own environment. -
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In 1953, James Watson and Francis Crick had proposed a model in the form of DNA and in 1955 Severo Ochoa discovered and isolated an enzyme from an Escherichia coli bacterial cell, which he named polynucleotide phosphorylase and which Later it was known as RNA polymerase. -
Frederick Sanger won the Nobel Prize in 1980, with Walter Gilbert, for a work published in 1977 in which they showed the method of determining the sequence of the building blocks of the DNA chain.
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