Human evolution is scientifically known as anthropogenesis. The scientific name of Human is Homo sapiens. The study of human evolution involves many scientific disciplines such as physical anthropology, archaeology, linguistics and genetics. Human evolution is scientifically known as anthropogenesis. The scientific name of Human is Homo sapiens. The study of human evolution involves many scientific disciplines such as physical anthropology, archaeology, linguistics and genetics. Humans evolved from other hominids, great apes and placental mammals in million of years
Scientists have estimated that humans evolved from their common ancestor with chimpanzees about 5-7 million years ago though the direct lineage from the ancestor of both man and the modern apes to modern man is not known.
Apart from modern apes human shared a common ancestor with whales, chimpanzees and with kangaroos. Studies show that human and chimpanzees shared a common ancestor about 8 million years ago. With whales, common ancestry is tracked about 60 million years ago. Kangaroos and Human shared ancestry about 100 million years ago.
About natural selection:
Natural selection is predictable and efficient mechanism of evolution. Due to evolution species adapt to their environment. It shows the reproductive success of a species, their design in nature and evidence of evolution in action. Due to several environmental and climatic changes individuals needs certain characteristics to have a greater survival or reproductive rate than other individuals in a population. Natural selection leads to evolutionary changes in individuals and pass on these inheritable genetic characteristics to their offspring.
Natural selection as an agent of evolution:
Species come to possess genetic adaptations to the environment due to process of evolution and its working mechanism is natural selection. The process of natural selection acts through individuals and it determines which individuals have the best adaptations for reproductive success.
Natural selection is the central idea of Charles Darwin and Alfred Russel Wallace. The term was introduced by Charles Darwin in one of his books. The struggle for resources or struggle for existence will favor individuals with some variations over others and thereby change the frequency of traits within the population. This process is natural selection and the traits that have an advantage to those individuals who leave more offspring are called adaptations.
Although It is not the only mechanism of evolution but one of the most responsible process for the evolution. There are many difference of opinions among scientist regarding Theory of Evolution and natural selection but over time enough evidence accumulated to support evolution and natural selection.Now when Evolution is a fact, Natural selection is the best process which explains it.Evidence of natural selection are well-documented by observation and through the fossil record.
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