Mutation theory is a scientific theory that explains how genetic changes occur and can be inherited. It was first proposed by geneticist Hugo de Vries in 1901.Mutation theory states that mutations are random and that they can result in a variety of phenotypic changes. The theory also states that mutations can be inherited from one …
The theory of natural selection is one of the most important theories ever developed in biology. It is the foundation of modern evolutionary theory and has been extensively studied and tested since its inception in the mid-19th century. This essay will discuss the theory of natural selection and its implications for our understanding of the …
The theory of natural selection – പ്രകൃതിനിർധാരണ സിദ്ധാന്തം Read More »
How do these peculiarities helps finches in their survival? The different beak shapes and sizes of the finches help them to survive by enabling them to feed on different types of food. For example, finches with larger, stronger beaks are able to crack open the hard shells of nuts and seeds, while finches with thinner, …
Which peculiarity of the finches attracted Darwin? The most notable peculiarity of the Galapagos finches that attracted Darwin was the variety of beak shapes and sizes that the different species possessed. He noticed that each species had a beak adapted to the food that it ate, and he used this observation as evidence for his …
Peculiarity of the finches attracted Darwin – ഡാർവിനെ ആകർഷിച്ച ഫിഞ്ചുകളുടെ പ്രേത്യേകത Read More »
Charles Darwin’s voyage on the HMS Beagle was a five-year journey around the world, beginning in 1831. During the voyage, Darwin visited South America, the Galápagos Islands, Australia, and many other places. During these visits, Darwin collected specimens and made observations of the natural world. His observations and collections provided the basis for his theory …
Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual’s ability to compete, survive, and reproduce. Darwinism states that populations evolve over the course of generations through a …
Lamarckism is a theory of evolution proposed by French biologist Jean-Baptiste Lamarck (1744–1829). It suggests that an organism can pass on characteristics that it acquired during its lifetime to its offspring. This is often referred to as the inheritance of acquired characteristics or soft inheritance. The theory was an attempt to explain the observed adaptation …
Evolution through theories : Lamarckism – സിദ്ധാന്തങ്ങളിലൂടെ പരിണാമം : ലാമാർക്കിസം Read More »
The geological time scale is a system used by geologists and other scientists to describe the timing and relationships between events that have occurred throughout Earth’s history. It divides Earth’s history into several periods of time, each with its own specific set of characteristics, including the formation of continents, major evolutionary changes, and mass extinctions. …
The Urey-Miller experiment was an experiment conducted by chemist Stanley Miller and physicist Harold Urey in 1953 that demonstrated the possibility of abiogenesis. Abiogenesis is the idea that life can come from non-living matter. The experiment was designed to simulate conditions on the early Earth and to see if the chemical components of life could …
Chemical evolution is the process by which the chemical composition of Earth’s atmosphere, oceans and soils has changed over time. It is thought to have begun shortly after the Earth formed, around 4.5 billion years ago, and has continued ever since. Chemical evolution can be divided into two distinct stages. The first stage is known …