Articles tagged with Natural Selection
Researchers discovered strong evidence for natural selection at eight genes in European-American populations, likely related to environmental conditions. The study found connections between genetic variation and diseases such as diabetes, obesity, high blood pressure, kidney disease, and Alzheimer's.
A genetic variant associated with increased heart disease risk emerged rapidly in the ancient European population around 24,000 years ago. The high-expression variant is linked to a mutation hotspot in MMP-3's regulatory DNA.
A new theory on aging, proposed by Ronald D. Lee, suggests that natural selection favors animals capable of devoting energy to insure survival of the next generation. This theory attempts to fill in gaps of previous ideas on aging and its relationship with nurturing behavior.
Researchers have identified a gene, Nup 96, that plays a crucial role in preventing the reproduction of hybrid fruit fly species, suggesting natural selection as the driving force behind their divergence. The study provides unprecedented insight into speciation and offers new avenues for understanding the evolution of genetic traits.
Researchers from Leiden investigated the role of constraints in evolution using tropical butterflies. They found that constraints sometimes play a role and sometimes do not, contradicting previous assumptions about natural selection.
The Darwin Correspondence Project has published 12 of a projected 32-volume set of Darwin's letters, shedding light on his evolutionary ideas. The project is sending these volumes back to the Charles Darwin Research Station in the Galapagos, where Darwin's research began.
Researchers Aviv Bergman and Mark Siegal found that complexity of genotypes, rather than natural selection, provides fidelity in development. They argue that functional genetic networks with enough complexity exhibit built-in property of fidelity, unaffected by environmental disturbances or natural selection.
Researchers found that about 25% of genes in fruit flies are evolving rapidly in response to competitive pressures, contradicting the neutral theory. In humans, around 35% of accumulated changes are 'good,' contributing to disease resistance and sexual reproduction, highlighting the ongoing role of natural selection.