Search results
Results from the WOW.Com Content Network
Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. [1] [2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3]
Evolution of cells deagus is mean refers to the evolutionary origin and subsequent evolutionary development of cells. Cells first emerged at least 3.8 billion years ago [ 1 ] [ 2 ] [ 3 ] approximately 750 million years after Earth was formed.
In 1839, Theodor Schwann states that along with plants, animals are composed of cells or the product of cells in their structures. [11] This was a major advance in the field of biology since little was known about animal structure up to this point compared to plants.
Although he was not the first thinker to advocate organic evolution, he was the first to develop a truly coherent evolutionary theory. [10] He outlined his theories regarding evolution first in his Floreal lecture of 1800, and then in three later published works: Recherches sur l'organisation des corps vivants, 1802. Philosophie zoologique, 1809.
Another common term at that time was the theory of evolution, although "evolution" (in the sense of development as a pure growth process) had a completely different meaning than today. The preformists assumed that the entire organism was preformed in the sperm (animalkulism) or in the egg (ovism or ovulism) and only had to unfold and grow.
Allan Wilson (1934–1991), New Zealand-US innovator in molecular study of human evolution; David Sloan Wilson (born 1949), US evolutionary biologist and geneticist; Edmund Beecher Wilson (1856–1939), US zoologist, geneticist, discovered XY and XX sex chromosomes; Øjvind Winge (1886–1964), Danish biologist and pioneer in yeast genetics
How humans developed the ability to digest starch: A study offers insight into the evolution of amylase genes, which are key to breaking down some carbs.
David Penny (born 1939), New Zealand biologist known for theoretical biology, molecular evolution, human evolution, and the history of science; Henri Perrier de la Bâthie (1873–1958), French botanist [285] who studied the plants of Madagascar. George Perry (born 1771), English naturalist, author of Conchology, or the natural history of shells