When Charles Darwin began his voyage around the world aboard H.M.S. Beagle, he shared with his contemporaries the almost unquestioned belief that every species of plant and animal then inhabiting ...

How are humans contributing to negative selection? It's a part of evolution that can also drive some species to extinction; models of negative selection help us understand biodiversity. Selection ...

Evolution can be defined as the change in the frequency of a phenotype in a population over many generations. Mutations can be inherited if they occur in DNA that is passed on to the next generation.

Charles Darwin's theory of evolution generated scientific debate and discussion not only in Darwin's own time, but for decades afterward. In the latter part of the nineteenth century and the until ...

Applied since the 1930s to accelerate the process of developing and selecting new valuable agronomic traits, mutation breeding uses a plant’s own genetic make-up, mimicking the natural process of ...

DNA contains genes that carry instructions for the manufacture of a protein. If a mutation occurs in a gene that results in a change to the sequence of DNA bases, then the structure of the protein ...

Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes ...

The early part of the twentieth century saw evolutionary theory embattled by disagreements over Darwin's emphasis on natural selection. The then-newly rediscovered work of Gregor Mendel in the ...

Scientists have discovered a genetic mutation in wild jaguars, sparking a heated debate: should we intervene and preserve this mutation, or allow natural selection to take its course? As we face ...

Natural selection is the process by which some organisms in a population survive and reproduce, while others do not, based on their bodies and behaviour. It is one of the processes by which ...