Search results
Results from the WOW.Com Content Network
Surprise (pronunciation ⓘ) is a rapid, fleeting, mental and physiological state. It is related to the startle response experienced by animals and humans as the result of an unexpected event. Surprise can have any valence. That is, it can be pleasant/positive, unpleasant/negative, or neutral/moderate.
Darwin explores the biological aspects of emotional behaviour and the animal origins of human characteristics like smiling and frowning, shrugging shoulders, lifting eyebrows in surprise, and baring teeth in an angry sneer. A German translation of Expression appeared in 1872, and Dutch and French versions followed in 1873 and 1874.
During this time, animals became bilateral and along with increasing complexity. [11] Many animals during this time fit into the annelid, arthropod, echinoderm, and cnidarian phyla. [11] Animals at this time developed bilateral symmetry with a clear anterior and posterior side, which included species like Spriggina, Charniodiscus and Yorgia. [10]
Beginning of animal evolution. [54] [55] 720–630 Ma Possible global glaciation [56] [57] which increased the atmospheric oxygen and decreased carbon dioxide, and was either caused by land plant evolution [58] or resulted in it. [59] Opinion is divided on whether it increased or decreased biodiversity or the rate of evolution. [60] [61] [62 ...
The argument that animals experience emotions is sometimes rejected due to a lack of higher quality evidence, and those who do not believe in the idea of animal intelligence often argue that anthropomorphism plays a role in individuals' perspectives. Those who reject that animals have the capacity to experience emotion do so mainly by referring ...
The study of the evolution of emotions dates back to the 19th century. Evolution and natural selection has been applied to the study of human communication , mainly by Charles Darwin in his 1872 work, The Expression of the Emotions in Man and Animals . [ 1 ]
The surprise of evo-devo is that the shaping of bodies is controlled by a rather small percentage of genes, and that these regulatory genes are ancient, shared by all animals. The giraffe does not have a gene for a long neck, any more than the elephant has a gene for a big body.
Humans determine which animal or plant will reproduce and which of the offspring will survive; thus, they determine which genes will be passed on to future generations. The process of artificial selection has had a significant impact on the evolution of domestic animals. For example, people have produced different types of dogs by controlled ...