Natural selection is evolution’s last force. This is the evolutionary process that Charles Darwin initially described in his book, origin of species. It is the image that most people think of when they think of evolution.
The study of links between distinct groups of species and their evolutionary development is known as phylogeny.
Introduction: Macroevolution is evolution at or above the species level, and it’s the outcome of hundreds of generations of microevolution. Macroevolution can entail evolutionary changes in two or more interacting species, such as co-evolution, or it might involve the development of one or more new species. Co-evolution occurs when the evolution of two or more…
Introduction: The concept of variation is central to Darwin’s hypothesis, and it claims that the many features and adaptations that distinguish species also explain how species originated and diverged over time. Variations in organisms can be seen within domesticated species and across species in the wild world. Origin of species Darwin’s theory consisted of two…
Introduction: Evolution occurs in reaction to external factors that cull out those who are least suited to surviving those pressures, enabling those who are more suited to thrive, live and reproduce. However, since humans have altered their habitats so drastically, some scientists have questioned whether natural selection affects our species. Evolution as an ongoing process…
Introduction: Phylogeny is a branch of biology that studies the evolutionary history of all life on earth, particularly in terms of lines of descent and interactions among large groupings of creatures. The phylogenetic hypothesis states that all living species have a common ancestor. Therefore, let’s learn more about phylogeny. Evidence for specific phylogenies: Paleontology, comparative…
Introduction: Viruses are microscopic, infectious agents that infect all life forms. They do not have cytoplasm or organelles like those present in cells, making them acellular. Viruses cannot replicate independently and must depend on the host cell’s metabolic system. However, viruses do not increase or re-infect each other, and instead, new viral components are generated…
Introduction: The earliest rocks having fossil evidence of life on earth are at least 3.5 billion years old. Therefore, we can understand that life originated at least 3.5 billion years ago. Let’s know more about the answer to when did life begin on earth in this article, along with other interesting facts. Origin of the…
Introduction: Did you know that you have an entire ecosystem living inside you right now? By definition, an ecosystem is the interaction between all living things in an area and their environment (it’s kind of a boring definition, but we promise ecosystems are actually really cool 😎). At this very moment, there are trillions of…
Introduction: Biotechnology is a wonderful science involved in developing new and innovative products. These products are derived from different biological existing organisms or systems. Biotechnology has constantly evolved over the years. From a simple process of making sourdough bread or setting yogurt to making fabric using biological organisms’ biotechnology has come a long way. It…