Geneticists solve 40-year-old dilemma to explain why duplicate genes remain in the genome
Geneticists at Trinity College Dublin have made a major breakthrough with important implications for understanding the evolution of genomes in a variety of organisms.
Cichlid fish genome helps tell story of adaptive evolution
(Phys.org) —Roughly 40 million years ago, a handful of species of fish from the Nile River went into three lakes in Africa and experienced an unusual flurry of evolution. In one of these lakes as many as ...
Paddlefish's doubled genome may question theories on limb evolution
The American paddlefish -- known for its bizarre, protruding snout and eggs harvested for caviar -- duplicated its entire genome about 42 million years ago, according to a new study published in the journal ...
Minus environment, patterns still emerge: Computational study tracks E. coli cells' regulatory mechanisms
Environment is not the only factor in shaping regulatory patterns—and it might not even be the primary factor, according to a new Rice University study that looks at how cells' protein networks relate to ...
Genetic survey sheds light on Oceans' lean, mean microbial machines
Planktonic bacteria inhabiting the world's oceans have streamlined their genetic makeup to become lean, mean survival machines, according to new research by an international team of researchers, including ...
Slow snails, fast genes: Predatory snails refine venoms through continuous gene duplication
(Phys.org) -- When tropical marine cone snails sink their harpoon-like teeth into their prey, they inject paralyzing venoms made from a potent mix of more than 100 different neurotoxins.
'Rules' may govern genome evolution in young plant species
A new University of Florida study shows a hybrid plant species may experience rapid genome evolution in predictable patterns, meaning evolution repeats itself in populations of independent origin.
Did increased gene duplication set the stage for human evolution?
(PhysOrg.com) -- Roughly 10 million years ago, a major genetic change occurred in a common ancestor of gorillas, chimpanzees, and humans. Segments of DNA in its genome began to form duplicate copies at a greater ...
Researchers pinpoint key events in ancient plant evolution
(PhysOrg.com) -- Researchers from the University of Florida and six other institutions have unlocked some of the key foundations for the evolution of seed and flowering plants.
Speeding up evolution: Orchid epigenetics
Organisms adapt to their dynamic environment using various strategies. Ovidiu Paun, working at the Department of Systematic and Evolutionary Botany, investigates how marsh orchids adjust to and diffuse in ...
Medicago genome sequence sheds new light on how plants evolved nitrogen-fixing symbioses
The genome of Medicago, a close relative of alfalfa and a long-established model for the study of legume biology, has been sequenced by an international team of scientists, capturing around 94 per cent of its ...
Gene duplication detected in depression
A large genetic study of people with major depression has found that a duplicated region of DNA on chromosome 5 predisposes people to the disorder. The gene involved plays an important role in the development of nerve cells, ...
Researcher uses genes to map evolution of species
Genes, whether from apes or the trees they live in, are the storytellers of the origins of a species, according to a Texas A&M University ecosystem science and management assistant professor in College Station.
Traces of early Native Americans -- in sunflower genes
New information about early Native Americans' horticultural practices comes not from hieroglyphs or other artifacts, but from a suite of four gene duplicates found in wild and domesticated sunflowers.