Extremophiles offer numerous advantages including (1) the absence of contaminants in open door cultures subjected to physicochemical pressure, (2) their potential adaptation to industrial environments such as presence of toxins, radioactive elements or extreme pH and consequently their potential use for the … Why are extremophiles so special? An extremophileRead More →
Explanation: Darwinian evolution proposes that all living organisms are formed by descent with modification from a common ancestor or cell. … Endosymbiosis explains the origins of Eukaryotic cells by the theory that one prokaryotic cell absorbed another prokaryotic cell creating a cell with multiple membranes. How does endosymbiosis lead toRead More →
Learning Objectives Describe the four basic causes of evolution: natural selection, mutation, genetic drift, and gene flow. Explain how each evolutionary force can influence the allele frequencies of a population. What is adaptation What is the mechanism? In evolutionary theory, adaptation is the biological mechanism by which organisms adjust toRead More →
In the early 19th century Jean-Baptiste Lamarck (1744–1829) proposed his theory of the transmutation of species, the first fully formed theory of evolution. In 1858 Charles Darwin and Alfred Russel Wallace published a new evolutionary theory, explained in detail in Darwin’s On the Origin of Species (1859). What is theRead More →
Mutation plays an important role in evolution. The ultimate source of all genetic variation is mutation. Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Does mutation rate affect evolution? Mutation is fundamental to evolution.Read More →
Dryopithecus. These are deemed to be the ancestors of both man and apes. … Ramapithecus. … Australopithecus. … Homo Erectus. … Homo Sapiens Neanderthalensis. … Homo Sapiens Sapiens. Who did humans evolve? Modern humans originated in Africa within the past 200,000 years and evolved from their most likely recent commonRead More →
John Dewy advocated education as a tri-polar process. Education is a tripolar process as it revolves around the students, the teachers and the environment in which the education is being imparted. These three are the main constituents of education. Who proposed education as a bipolar process? On its basis, JohnRead More →