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Tag: "similarities" at biology news

Cancer stem cells similar to normal stem cells can thwart anti-cancer agents

... many types of refractory cancers. “Because of the similarities between the way that normal stem cells and cancer stem cells protect themselves, cancer therapies have to be designed specifically to target cancer stem cells while sparing normal stem cells,” she explained. ...

CU study reveals why starling females cheat

... yet, it is unknown how females detect the genetic similarities between themselves and their mates, though other species of birds appear to adopt similar mating strategies. "This is the first study to show that individuals from the same population mate with extra-pair males and gain both direct (like additiona...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...wo different mosquitoes, the scientists found some similarities in the genes controlling their respective immune systems, but also numerous differences. The team aims to discover which of these genetic differences could explain why one type of mosquito transmits dengue and yellow fevers, while the other transmits...

'Personality-gene' makes songbirds curious

...d the curiosity of the birds in a test which shows similarities to the traditional "open-field" test used by psychologists. They tested the exploratory behaviour of each bird soon after it left the nest (Early Exploratory Behaviour, EEB), as follows. In one behavioural test, the biologists measured the time until...

'Insulator' helps silence genes in dormant herpes virus

...st chromatin," Zhou says. "Learning more about the similarities and differences in these chromatin structures may help finding ways to develop therapies that can target the virus and not the host." ...

Egyptians, not Greeks were true fathers of medicine

...cient Egypt with modern species and to investigate similarities between the traditional remedies of North Africa with the remedies used by their ancestors of 1,500 BC." ...

Individuals and populations differ in gene activity levels, not just genes

...orey. "This means that populations have a lot more similarities than differences when it comes to gene expression." Their findings may help us better understand how human populations are structured and interrelated, and could also help explain evolutionary development of humans from our ancient ancestors to p...

Male owls pitch their hoots to advertise body weight to competitors

..." "The vocal communication of owls has interesting similarities to that of terrestrial mammals where the information is typically encoded in acoustic components of the calls rather than in the diversity of the vocal repertoire as it is in songbirds," says Reby, who is an expert in the study of mammal vocal commun...

Scripps research study shows humans and plants share common regulatory pathway

...ious pathogens. The study also confirms structural similarities between the Nod1 protein, which plays a pivotal role in the innate immune system’s recognition and response to bacterial infection and members of the R protein family. "There has been a great deal of speculation that R proteins and Nod1 are relat...

New sucker-footed bat discovered in Madagascar

...als, the study concludes. Due to the physical similarities between M. schliemanni and M. aurita, the researchers concluded that one species probably evolved from the other, most likely after the bat dispersed across the island from east to west. Bats are the last group of land mammals on Madagascar that h...

Autism gene identified by researchers at Yale working with a global research consortium

...um used "gene chip" technology to look for genetic similarities in autistic individuals culled from almost 1,200 families. They also scanned the DNA to search for copy number variations, which are submicroscopic insertions and deletions of genetic material that scientists believe may be linked to autism and other...

DNA ends: Common tool, different job

...he RPA complex. In particular, Stn1 and Rpa2 share similarities in a region known as oligonucleotide/oligosaccharide-binding fold or OB-fold, a protein fold that is commonly used to recognize and bind to either DNA or RNA. Based on these findings, Lundblad and her colleagues developed a model, which predicts ...

Selective marker found to indicate aggressive form of breast cancer

...ial breast tumors, a highly aggressive cancer with similarities to mammary stem cells, the regenerative cells believed to be the site of breast cancer initiation. "Patients with this type of breast cancer are at high risk for recurrence," said James DiRenzo, Ph.D., assistant professor at Dartmouth Medical Sc...

Freeze! Scientists film proteins at work by freezing them at different states

It is difficult to find similarities between Grenoble and Hollywood or between the researchers at the ESRF and the Institut de Biologie Structural (IBS) and world-known filmmakers. However, scientists from these institutes based in Grenoble (France) have managed to produce a movie. The ...

Largest genomic search finds genes that may contribute to autism

...alled "gene chip" technologies to look for genetic similarities among these family members. In addition, the team scanned the same DNA for what are called copy number variations. These are submicroscopic insertions and deletions of genetic material that scientists believe may be involved with autism and other c...

Biologists call for better choice of model organisms in 'evo-devo'

...than because it has known genetic or developmental similarities to it. "We caution against this widely used rule of thumb, and advise the use of additional criteria, such as molecular branch lengths, to choose species as best representatives of ancestral body plans," said Dr Jenner. "Just because an organis...

NYU scientists identify how development of different species uses same genes with distinct features

...years ago but one that presents many morphological similarities with flies in terms of development. The research team’s results showed that flies and wasps employ most of the same genes and similar interactions among these genes, but some events are changed to adjust to the developmental constraints. Flies ...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

... the result of early experience and not of genetic similarities between mothers and daughters. "We didn't know if the reason that the babies grew up to be abusive was that they watched how their mothers parented and repeated their behavior or whether their early experience produced long-term changes in brain pr...

Uncovering DNA's 'sweet' secret

.... While the homo-DNA structure shows a number of similarities with DNA, it is much more stable than DNA. However, it has a more haphazard appearance than normal DNA, looking more like a "slowly writhing ribbon" than the tightly twisted ladder of DNA. "The reason that DNA was 'picked' is not because it's therm...

New clues to how sex evolves

...croscope The tandem arrangement and structural similarities of the him and zim genes suggest they all arose from a common ancestor through gene duplication and subsequent selection. This inspired Dernburg and Phillips to look at similar genes in the related species C. remanei and C. briggsae. Like C. elegans,...

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