Evolution is simply the process of organisms developing and diversifying from a previous earlier form during the history of the earth. The four forces evolution‚ what is believed to push evolution to go forward‚ are mutation‚ natural selection‚ genetic drift‚ and gene flow. Let’s start with mutation. A mutation‚ occurring during the process of mitosis or meiosis‚ is a change in genetic code or chromosome. This can affect how one physically looks‚ behave‚ and think. Mutations are random. Most are
Premium DNA Genetics Evolution
Evolution of Birds It has become widely accepted that birds have evolved from reptiles in the Jurassic period and are the living descendants of a group of dinosaurs called theropods. Birds share hundreds of unique skeletal features with dinosaurs. Over the years‚ birds have evolved in a wide variety of forms‚ from flightless and aquatic to flying animals. Due to poor fossil records‚ some information regarding the evolution of birds are based on theories but during the last 30 years‚ the evolutionary
Premium Bird
Evolution and classification Main article: Evolution of birds Archaeopteryx lithographica is often considered the oldest known bird The first classification of birds was developed by Francis Willughby and John Ray in their 1676 volume Ornithologiae.[5] Carolus Linnaeusmodified that work in 1758 to devise the taxonomic classification system currently in use.[6] Birds are categorised as the biological classAves in Linnaean taxonomy. Phylogenetic taxonomy places Aves in the dinosaur clade Theropoda
Premium Bird Dinosaur
Human Evolution Human Evolution‚ the biological and cultural development of the species Homo sapiens‚ or human beings. A large number of fossil bones and teeth have been found at various places throughout Africa‚ Europe‚ and Asia. Tools of stone‚ bone‚ and wood‚ as well as fire hearths‚ campsites‚ and burials‚ also have been discovered and excavated. As a result of these discoveries‚ a picture of human evolution during the past 4 to 5 million years has emerged. Human Physical Traits Humans are
Premium Human Hominidae Human evolution
Evolution Evolution is considered to be the process in which life changes or evolves over time‚ with new species of life being produced from existing species. The creation-evolution controversy has been an ongoing political‚ theological and cultural debate. The scientific evidence shows that the earth is around 4.5 billion years old and that life evolved over time. However‚ those who believe in the Bible reject the scientific evidence and refer to Genesis. Genesis states that God created the world
Premium Evolution Creationism Life
The Future of Human Evolution Alexander R. Prof. Kohn Darwinism and Evolution 12-6-96 Evolution‚ the science of how populations of living organisms change over time in response to their environment‚ is the central unifying theme in biology today. Evolution was first explored in its semi-modern form in Charles Darwin ’s 1859 book‚ Origin of Species by means of Natural Selection. In this book‚ Darwin laid out a strong argument for evolution. He postulated that all species have a common ancestor
Premium DNA Evolution Genetics
models. Topic Outline: I Fashion Evolution A Fundamentals and Natures of Fashion B Contributing Factors of Fashion Evolution II Fashion Vogues A Fashion vogues of the old generations (1950s to 1980s) B Fashion vogues of the new generations (1990s to 2000s) III Deductions Topic- Sentence Outline: I Fashion Evolution A Fashion is delineated B Contributing factors that lead to the evolution of fashion are elucidated.
Premium Clothing 2nd millennium
Evolution of the Alligator Evolution of the Alligator One of the most highly evolved animals on the Earth today is the alligator. Found mainly in the swamps and warmer climates of the earth‚ these predators are one of the few animals left that existed when the dinosaurs roamed the planet. Over the millennia‚ they have evolved into one of the most feared and interesting creatures today. However‚ the modern alligator is a far cry from its ancestral roots. Today‚ by looking at the anatomy of
Premium Crocodile Human anatomy
Natural disasters‚ however powerful and sudden they may be‚ are not incapable of being guarded against. The modern technology has given enough gadgets to people for forecasting‚ and lessening if not totally preventing heavy damages inflicted upon by the natural disasters. Only requirement is that people must take interest in getting as much awareness as possible about the safeguard measures. It is also important to see that we do not contribute to natural disasters by polluting the environment and
Premium Natural environment Technology Science
Evolution Generally‚ evolution is any process of change over time. In the context of life science‚ evolution is a change in the traits of living organisms over generations‚ including the emergence of new species. Since the development of modern genetics in the 1940s‚ evolution has been defined more specifically as a change in the frequency of alleles in a population from one generation to the next. Darwin ’s theory of evolution describes the descent of all living organisms from a common ancestor
Free Evolution Natural selection Charles Darwin