Speciation has been amajor focus of evolutionary biology research in recent years, with many important advances. However, some of the traditional organising principles of the subject area no longer provide a satisfactory framework, such as the classification of speciationmechanisms by geographical context...
Answer to: What mechanisms account for speciation and macroevolution? By signing up, you'll get thousands of step-by-step solutions to your...
What are the mechanisms that enable organisms to minimize mutations in stem cells? Why is this important?Mutations:Mutations are the changes in the nucleotides sequence, gene sequence, or proteins that are present inside the cell. These mutations can arise from an ...
Within zones of repeated contact, the conditions are usually such that individuals constantly make mistakes, which lead to the formation of mixed pairs and the production of hybrids. Thus, at the individual level, self-nonself recognition often appears to be inefficient. This is especially so at...
mechanisms promoting transposition bursts are at present completely unknown, although these reshuffling events followed by calm periods could constitute an important way in which to promote new genetic variability in Drosophila favoring population adaptation and ulti- mately promoting processes of speciation....
While all nuts are rich sources of fat, macadamia nuts are particularly rich in omega-9 fatty acids (aka the monounsaturated fat). As a matter of fact, around 50 percent of the fat in these creamy nuts comes from omega-9’s. This is important because omega-9 fatty acids appear to redu...
2. Misapplications of the type species name and the generic synonyms of the section Plenodomus. Persoonia 16:141–190 Google Scholar Brasier CM (1995) Episodic selection as a force in fungal microevolution, with special reference to clonal speciation and hybrid introgression. Can J Botany 73:S...
This finding suggests the existence of organ-specific selective mechanisms, which remain largely uncharacterized. For example, our group showed that the microbiome composition was highly similar between the colon and small intestine early after birth but diverged into a site-specific microbiota after ...
What are the biological mechanisms behind the variation within sexually reproducing species? How does fertilization increase genetic variation? What are all the problems of defining "species" using only reproductive compatibility? What are 3 different processes that occur during the sexual life cycle that...
In phylogenesis, biologists study the changes in genetic features and traits that occur across multiple generations, leading to speciation and diversity. Conversely, ontogenesis deals with how these genetic blueprints are expressed in an individual throughout its life stages, including embryonic development...