Speciation

Although natural selection is commonly perceived to be a mechanism of Darwinian evolution, it is scientifically impossible for this process to justify Darwin’s claim that natural selection causes species diversity from a common ancestor. Natural selection, commonly referred to as survival of the fittest, is defined as follows, “a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads to the…

INTRODUCTION Evolution of Development is best described as a field of Biology that compares the developmental processes of different organisms to determine the ancestral relationship between them, and to discover how developmental processes evolved. Whereas Species Development is the genetic switches that allow different structures to develop in different regions of an embryo, which could also give rise to major morphological differences among species. Everyday new species are being discovered…

The Pacific leaping blenny is a small fish found on the tropical island of Guam. Its scientific name is Alticus arnoldorum and it has made one of the most tremendous ecological transitions over time. The Pacific leaping blenny effectively established its population on land through an evolved variety of adaptations, such as: the ability to move efficiently on land and being able to perform respiration through its skin while still relying on its gills. The fish are limited to the “splash zones” of…

Remarkable Creatures chronicles the stories of landmark scientific events and the biologists behind them- following the creation of Darwin’s unprecedented theory of natural evolution. The events mentioned in the book were all centered around the concepts of evolution and the origin of species. The first part of the book details the journeys of Charles Darwin and Alfred Wallace, young collectors turned into naturalists as they travelled around the globe searching for exotic specimens to take home…

There are two main ways of looking at the tempo of evolution and they are phyletic gradualism and punctuated equilibrium. These two ideas are opposite, however, they are not entirely different concepts; it is like they are at two ends of a continuum. Phyletic gradualism and punctuated equilibrium provide different ways of determining how fast changes occur. Phyletic gradualism “holds that daughter species unusually originates through a progressive series of small, gradual transformations of…

Darwin, a geologist and former medical student, sets out the theory of evolution by his discovery of the species on Galapagos Islands. Darwin’s father decided to send him to Cambridge to earn a degree “bachelor of arts.” Darwin did, in fact, graduate from Cambridge after full attendance of four years, alongside interests of “collecting specimens.” A close friend of Darwin offered a chance to explore his desire to collecting specimens by an expedition of the world, which lasted five years.…

stretch. This corrects for variability in mutation rate from locus to locus. In particular, it corrects for a high local mutation rate.” (Patterson, N., Richter, D. J., Gnerre, S., Lander, E. S., & Reich, D. (2006). Genetic evidence for complex speciation of humans and chimpanzees. Nature, 441(7097), 1103) The documentation talks about how they calculated the differences in the sequence pairs and what it corrects over the mutation rate. That is not the only thing that is different. If you…

The symbiosome is a key area of research at present, it is defined as the organ which the organism produces to entrap the microbe internally* (V. Clarke et al 2014). The symbiotic relationship between plants and fungi is an essential one for benefiting fully from Mycorrhizae, which then helps the land plants absorb the essential nutrients such as phosphorus and nitrogen. The interaction between plants and microbes allows for essential functions of the plants such as growth, germination and…

at the proficient levels on the assessments used at your school? To increase the chances of students from low-income families at the proficient levels on the assessments used, I would make sure they are learning what I am teaching. Having high speciation for these students would allow me to notice if they are falling behind. According to Johnson, Musial, Hall, and Gollnick (2014), teachers “should learn how to assess student learning and make adjustment to your instruction when students are…

Darwin 's theory of evolution is a widely held concept that all life is related through the descent of a common ancestor with modification. It presumes the development of life from non-life and how complex creatures evolve over time from more simplistic ancestors by a process called natural selection. According to Darwin’s observations and inferences, natural selection arises from heritable variations (i.e size, shape, behavior, color) among population members, high fertility rate, differences…