Evolution which is the change of characteristics of different populations over time is the theory used to explain the massive diversity experienced on earth. Sapiens during and since the last glacial period.
Morgan began to breed and conduct experiments with the common fruit fly drosophila melanogaster which initiated the field of experimental genetics.
Evolution theory timeline. Trouble in evolutionary timetable. When it comes to the evolution of life various philosophers and scientists including an eighteenth century english doctor named erasmus darwin proposed different aspects of what later would become evolutionary theory. English naturalist established that all species of life have descended over time from common ancestry and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.
Thomas hunt morgan 1866 1945 establishes the chromosomal theory of heredity. Darwin begins a five year voyage as a ship s naturalist on the hms beagle. Through natural selection if the mutation gives some advantage that individual survives to reproduce and thus secures that change in the genetics of the population.
From the life of charles darwin to the various legal battles in america over teaching evolution in public schools few scientific theorieshave been associated with as much controversy as the theory of evolution and the idea of common descent. In biology evolution is any change across successive generations in the heritable characteristics of biological populations. This timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet earth.
Evolutionary processes give rise to diversity at every level of biological organization from kingdoms to species and individual organisms and molecules such as dna and proteins. A trail of tiny tracks in uruguay s tacuarí formation has evolutionary pundits. French scientist georges cuvier is recognized as the father of paleontology along as being well known for his rejection of any evolutionary theory from his study of the fossil record.
The evolutionary model for the speed of human evolution is influenced by the anthropological timeline. Evolution timeline rapid evolution. Understanding the timeline of background events is important to understanding evolutionary theory itself.
These changes occur with small mutations in genes which are then passed onto offspring. His observations of scientific phenomena particularly the wildlife on the galapagos islands lead darwin to form his theory on the origin and development of life. The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species homo sapiens throughout the history of life beginning some 4 billion years ago down to recent evolution within h.
Molecular clock being reset. But evolution did not reach the status of being a scientific theory until darwin s grandson the more famous charles darwin.