Sexual selection

changes that occur randomly in the frequency of alleles which impact populations of many species. These also lead to effects such as bottle neck and founders effect. Natural Selection revolves around the concept of fitness which basically means to survive and pass on your genes to the next generations. Further natural selection has four principles which include variation, heritability, the number of offsprings of people are greater than the available resources and finally, favourable…

published on Friday in the journal Science uses life history theory to explain why tropical songbirds typically raise fewer chicks than temperate songbirds. What’s life history theory? Life history theory seeks to explain the ways in which natural selection works to determine a given organism’s anatomy and behaviors. Life history theory suggests that reproductive tendencies, or “life history strategies,” are part of a complex system of species traits, or “life history characteristics.” Parent…

From Lucretius, Aristotle, Leonardo da Vinci, to Darwin, Smith and Lamarck, many Philosophers, artists, and scientists have produced theories of evolution in attempts to explain the living and non-living creatures around them. ‘Charles Darwin’s grandfather, Erasmus Darwin…”a British physician and poet… proposed that life had changed over time.” “The possibility of common descent based on changes undergone by animals during development…”Evolution is a fact, the theory of evolution explains how…

Another difference between actual natural selection and what Hitler explains is that natural selection happens naturally between two different species. But in the events where humans used natural selection it was intentional. For example the Native American population of North America that went from 112 million in 1492 to 10 million by the end of the 19th century. Some may say that the native American genocide was a form of natural selection because of the part disease played in the genocide…

Darwin and Herbert Spencer did not agree with this concept and so Social Darwinism was born. Social Darwinism is the theory that certain groups of people should follow the same rules of natural selection as plants and animals do. Darwin created Darwinism which says that species evolved by natural selection and those that could not adapt did not evolve as much. In the late nineteenth century a man named Herbert Spencer adopted a concept called Social Darwinism. Social Darwinism was an excuse to…

possibly an adaptation in larger brains which facilitate quick information process and transfer, and probably evolved concurrently with social behavior (Hunter 2010). Researchers suggest that, apart from humans, elephants have undergone the strongest selection for genes associated with empathetic behaviors. Evidence for this phenomenon can be seen in a study by Goodman et al. (2009), in which the nucleotide sequences of several mammalian species were studied. The researchers found that…

Frederick Sanger was born to Cicely Sanger and Frederick Sanger on August 13, 1918 in Rendcomb, England. At age 18 Sanger went against his family and decided to become a scientist instead of a doctor like his father (Jeffers, 2017). He attended St. John’s College in Cambridge and majored in biochemistry. After he graduated he married Margaret Joan Howe at age 22 and had three children with her. He later came back and worked with Albert Neuberger in order to study the metabolism of…

All animals belong to the supergroup Unikonta. Since these animals are found in almost every environment on earth, it has become possible to study their characteristics and construct evolutionary relationships, noting morphological and molecular similarities and differences. The relationships between the most primitive of animals were determined by the morphological traits of symmetry, tissues, body cavity, embryological development, and molecular evidence. [1] Symmetry and tissues are major…

Adaption is a change in gene frequencies as a result of natural selection (Wilreker, 2016). An adaption will manifest itself as a characteristic of an organism that is some way contributes to the organisms reproductive success (Wilreker, 2016). Bipedalism is an adaption of upright, two-legged movement rather than four-legged movement, and the key characteristic which makes early hominins different from the apes (Kottak, 2015). There are many advantages of bipedalism adaption which Scientists…

‘“Of all mankind's creations, language must take the pride of place.”’claims Guy Deutscher, a professor of languages. In the investigation 6, “How Does Language Make Human Different,” explains many qualities human contain rather than primates and other living organisms such as bacteria, birds, bees, and primates. Humans continue to change the way we are able to view things, we collectively learn because of our sophisticated language. As we expand our knowledge we attempt to pass it on to our…