the fin of a whale could be remotely similar? I’m guessing your answer is no. But because of divergent and convergent evolution, these things are possible. Divergent evolution occurs when a population becomes isolated from the rest of the species and becomes exposed to new selective pressures, causing it to evolve into a new species based on their environment and needs. Convergent evolution is when unrelated species occupy the same environment, making them subjected to similar selective pressures
Convergent evolution can be defined as “the repeated evolution of similar traits in independent evolutionary lineages inhabiting similar environments” ( www.oxfordbibliographies.com/view/document/obo-9780199941728/obo-9780199941728-0038.xml) . It refers to the commonalities between two or more unrelated species, which arose as an outcome of adaptive evolution due to natural selection. Adaptive evolution is the changes which occur to a population due to environmental pressures. This pattern of evolution
Waterfowl thrive in the wild by using their senses, adapting to changing weather conditions, using the benefits of habitats from wetlands and grasslands, as well as feeding adaptations. Ducks and Geese take advantage of their natural ability to survive in the wild. Humans can help or hurt the survival of waterfowl by their actions. Many states have created conservations or refuges that benefit the waterfowl, but the help of humans has decreased over the years. Ducks and Geese have the same five
Millie Newton Miss Amiat 22 February 2018 Plate Tectonics definition of plate tectonics Plate tectonics is the study of the structure of the earths crust & mantle with reference to the theory that the earths lithosphere is divided into large rigid blocks that are floating on semi fluid rock and are thus able to interact with each other at their boundaries and to the associated theories of continental drift and sea floor spreading. There are a few handfuls of major plates and dozens of minor
activity occurring when these different plates interact at plate boundaries. Volcanic activity, therefore, occurs at two types of plate boundaries: mid-ocean ridges and subduction zones. Plate tectonics also influence the evolution of the
ago. I believe that the beach mice phenotype (for light coat color) evolved around 6,000 to 4,000 years ago, which would mean that the phenotype had a fast evolution. • Is there convergent evolution in light coat color in the beach mice populations? Based on the evidence presented in the article, the reader can conclude that convergent evolution occurred in the light coat color in the beach mice population. Even though the Gulf Coast mice and the Atlantic Coast mice developed light coat colors
Geographic, n. d.). HOMOLOGOUS AND ANALOGOUS TRAITS / CONVERGENT AND DIVERGENT EVOLUTION Evolutionary theories explain that the structural adaptation of the bill of birds is an example of homologous traits; traits inherited by two different organisms from a common ancestor (British Ornithologists' Union, 1904, p. 652), differently of the analogy traits which consists of similarities of convergent evolution, not from common ancestry (Understanding Evolution, n. d.). In our example between the birds and the
understand evolution. Simply putting it, evolution is the change of a species through many generations. Many things change, such as leaves falling off trees in the fall however, biological evolution is important because it is the changes that are genetically inherited through generations. These changes are also known as adaptations and help species increase their fitness(their ability to survive and reproduce). When looking at evolution, there is small-scale evolution and large-scale evolution. Changes
Convergent Evolution According to Eric R. Pianca, convergent evolution is, “the process by which unrelated or distantly related organisms evolve similar body forms, coloration, organs, and adaptations.” Natural selection can be a cause of evolutionary convergence. Species tend to have sympatry (interbreeding population that splits into several other species) and often mimic each other when they all live under similar circumstances and environments. There are two types of mimicry, which are Batesian
In his novel, Why Evolution is True, Jerry Coyne describes two major sources of evidence for evolution. He said that testable predictions can be made from the theory of evolution and confirmed through biological research. He also claimed that retrodictions play a big part in supporting the theory of evolution. Retrodictions defined by Coyne is as follows: “facts and data that aren’t necessarily predicted by the theory of evolution.” Coyne is correct in saying that evolution has supporting evidence
g., mutation, genetic drift, migration and/or natural selection. What is the difference between homologous and analogous traits? How does the trait of choice fit either of these descriptions? What is convergent and divergent evolution? Whether the trait is a result of convergent or divergent evolution. Chimpanzee, gorilla, human all have in common prehensile hands unlike the other mammals. Describe what makes this trait an adaptation Primitive primates were quadrupeds just like the bear in the
) Convergent evolution is the process in which organisms which are not closely related derive akin traits separately due to the need for adaptation to similar environments or ecological niches. There may be resemblances at a phylogenetic level, but the basic DNA sequences are different. Morphologically, convergent evolution occurs when different species live in similar environments and hence adapt to the same environmental factors, such as challenges to reproduction and survival. Convergent evolution
brings about evolution. Compare with survival of the fittest. “The Hardy-Weinberg formulas allow scientists to determine whether evolution has occurred. Any changes in the gene frequencies in the population over time can be detected. The law essentially states that if no evolution is occurring, then an equilibrium of allele frequencies will remain in effect in each succeeding generation of sexually reproducing individuals. In order for equilibrium to remain in effect (i.e. that no evolution is occurring)
species? • Species is a group of members that breed together and have similar appearances. Convergent evolution • Convergent evolution is when species of a different group share similar traits because they have to adapt to the environment they share. Divergent evolution • Divergent evolution is when species come from different groups and form together to become a new species. Co-evolution • Co-evolution is when two species evolve from one another. Homologous
of History, in 1989, and in it, he focused primarily on the evolution of animal life in the Cambrian Period, a dispensation of the Paleozoic Era. He broached parts of the subject by presenting readers with the hypothetical scenario in which time is rewound to the beginning of evolution and asking whether or not evolutionary events would all occur exactly the same way they did in our reality. He, instead, suggested that rebooting evolution would actually subject life to all the same variables as before
connection between volcanism and plate tectonics is that “plate motions provide the mechanisms by which mantle rocks undergo partial melting to generate magma” (Condle, 2015). Volcanism is prominent at two types of plate boundaries, convergent and divergent. At convergent plate boundaries, two plates move towards each other, causing a slab of oceanic crust to descend below the continental plate into the mantle (Subduction), which will create a deep ocean trench. As shown in figure 2.1, this slab of
Aerial volcano lies at the convergent plate boundary between an oceanic and continental plate. It is believed to have been formed through the process of subduction. When the two plates converge, the denser and thinner oceanic plate gets bent, or subducted, beneath the lighter and thicker continental plate. The magma rises, becoming lava when it reaches the Earth’s surface. When the lava cools, it forms rock. Over time, after several eruptions in which magma explodes to the surface when pressure in
According to the textbook, Alfred Wegner proposed the idea that the continents were drifting across the globe. He called this idea the continental drift. He had the idea that the continents were once together forming one big landmass named Pangaea. As Pangaea developed it caused the continent to break apart, and drift to their present locations. To be able to prove this idea however, he had to have evidence to show it was true. If I could travel back in time to help Wegner prove his idea to be true
The other part of the Earth consists of rigid plates which is called the lithosphere plates. They are moving relatively to each other. The moving of lithosphere plates is called plate tectonics. The idea of plate tectonics begin in 1600. Little significance was given to this notion till 1915 when Alfred Wegener, Germany meteorologist and geophysicist wrote a book entitled The Origins of Continents and Oceans. He had read about the similarities in the American and European fossils and become interested
question of how the diversity of life came about on the planet still remains. There are many scientists whom have committed their time into discovering and proposing new answers to this question. The majority of the main theories involve the idea that evolution serves as an understanding of how two species can evolve from one (WGBH Educational, 2001). Slide