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The history of biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine and the works of Aristotle, Theophrastus and Galen in the ancient Greco-Roman world.
1933 – Tadeus Reichstein artificially synthesized vitamin C; first vitamin synthesis. 1935 – Rudolf Schoenheimer used deuterium as a tracer to examine the fat storage system of rats. 1935 – Wendell Stanley crystallized the tobacco mosaic virus. 1935 – Konrad Lorenz described the imprinting behavior of young birds.
Zeugopterus punctatus, the common topknot, is a species of left eyed flatfish in the family Scophthalmidae, from the eastern Atlantic Ocean. Description [ edit ] Zeugopterus punctatus is a small left-sided flatfish that is almost completely round in shape, with a broad body relative to its length.
1857–1881. Henri Milne-Edwards (French, 1800–1885) introduces the idea of physiologic division of labor and writes a treatise on comparative anatomy and physiology (1857–1881). Charles Darwin 's 1859 publication On the Origin of Species revolutionised zoology. 1859.
e. In biology, phylogenetics ( / ˌfaɪloʊdʒəˈnɛtɪks, - lə -/) [1] [2] [3] is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by phylogenetic inference, methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or ...
The history of zoology before Charles Darwin 's 1859 theory of evolution traces the organized study of the animal kingdom from ancient to modern times. Although the concept of zoology as a single coherent field arose much later, systematic study of zoology is seen in the works of Aristotle and Galen in the ancient Greco-Roman world.
Chonmage. A 19th-century samurai with a chonmage. The chonmage (丁髷) is a type of traditional Japanese topknot haircut worn by men. It is most commonly associated with the Edo period (1603–1868) and samurai, and in recent times with sumo wrestlers. It was originally a method of using hair to hold a samurai kabuto helmet steady atop the ...
Evolutionary biology. Evolution of cells 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. [4]