Genetic divergence is the process in which two or more populations of an ancestral species accumulate independent genetic changes (mutations) through time, often after the populations have become reproductively isolated for some period of time. This means that the populations of species live independently of each other long enough that they can no longer produce offspring that can survive. In some cases, subpopulations living in ecologically distinct peripheral environments can exhibit genetic divergence from the remainder of a population, especially where the range of a population is very large (see parapatric speciation). The genetic differences among divergent populations can involve silent mutations (that have no effect on the phenotype) or give rise to significant morphological and/or physiological changes.
On a molecular genetics level, genetic divergence is due to changes in a small number of genes in a species, resulting in speciation. However, researchers argue that it is unlikely that divergence is a result of a significant, single, dominant mutation in a genetic locus because if that were so, the individual with that mutation would have zero fitness. Consequently, they could not reproduce and pass the mutation on to further generations. Hence, it is more likely that divergence, and subsequently reproductive isolation, are the outcome of multiple small mutations over evolutionary time.
Using genetic engineering, they got the experimental plants to produce more phytoglobin, a molecule that captures and destroys nitric acid (NO) ... “This innovative approach diverges from traditional, costly, and environmentally harmful fertilizers.
The study was based on genetic analyses of specimens that confirmed that the Indo-Burmese pangolin diverged from the Chinese pangolin around 3.4 million years ago ....
John Williams, an American scientist who has studied HMPV for more than 20 years, recently told Scientific American that evidence from genetic evolutionary studies suggests HMPV diverged from a bird ...
Could nutritional guidelines be rewritten to reflect regional and ancestral differences in metabolism? Could psychological research uncover divergences in learning behavior informed by genetic and ...
9 on the bioRxiv preprint server, genomic sequences from modern humans, Neanderthals, and Denisovans were analyzed for genetic divergences and pinpointing human-specific genomic regions ... These genetic ...
WILTON — It’s a cruel statistic. Each year, U.S ...Nancy Roulston more bluntly calls it “a blender.” ... Only about 11% of U.S ... Since 2022, U.S ... Over the past 100 years, genetics for layers and broilers — chickens used for meat — have diverged, he says ...
While they share some genetic similarities with humans, especially in their evolutionary history, mushrooms are neither plants nor animals ... This ancient lineage means that, on a genetic level, humans ...
... compare it to a database of breed genetics ... A study this year found compared the genomes, or complete genetic codes, of modern domestic and wild rabbits to see how long it had taken them to diverge.
Within the desolate landscape surrounding the infamous Chernobyl nuclear disaster site, hundreds of feral, radioactive dogs are displaying extraordinary genetic mutations ...Genetic adaptations of Chernobyl dogs.
... the study investigates the genetics of Amborella trichopoda, the sole surviving member of an ancient lineage of flowering plants that diverged from their relatives approximately 150 million years ago.
The researchers also did genetic analysis to parse out the ... For one, its DNA sequence demonstrated significant genetic divergence, meaning its genome was unique compared to other known geckos.
Yet the past 25 years have also witnessed an explosion in our understanding of human genetics and genomics ... However, other emerging genetic evidence suggests that such cognitive divergence may also have occurred.
Picky eating may be genetic ...Fraternal twins were more likely to be different in their fussy eating habits than identical twins, indicating a large genetic influence, reported STAT.
... with a giraffe to create a "genetic animal Frankenstein." ... Genetically speaking, hybrid animals are the direct result of interbreeding between divergent lineages, according to National Geographic.
San Diego Union-Tribune
05 Nov 2024
San Diego Union-Tribune
05 Nov 2024