Tag: "hybrids" at biology news

Ants Genetic Engineering Leads To Species Interdependency

...ecies-specific lineage, whereas all the workersare hybrids that possess a combination of genes from the two species ina single individual.It is not currently known whether the ants benefit from having hybridsdo the work, but, as is evident from the researchers' own attempts atselective breeding and genetic e...

Research suggests fitness of Florida panthers improved by limited breeding with Texas animals

...ttens that received microchips, 13 purebred and 20 hybrids survived long enough to also receive adult radio c...orn to purebreds survived and compared them to the hybrids -- those that had Texas mothers or grandmothers. "More than three times as many hybrid kittens appea...

From a Few Wild Ancestors, a Citrus Cornucopia

...forms of citrus in the world and that the rest are hybrids of these ancestral forms. The research also supports the generally held concept that most familiar citrus fruits -- including oranges, grapefruits, and lemons -- are actually hybrids. A Chosen Few Part of this can be explained by the fact that citr...

Islands in the Genome Promote Speciation

...f possible cross-flow of genetic material (natural hybrids between the two forms are found at a low frequency) between two populations, the populations can still be accumulating differences in their genomes—differences that could eventually lead to the formation of new species. Comparing results in Anopheles...

Adult stem cells aid recovery in animal model of cerebral palsy

...f possible cross-flow of genetic material (natural hybrids between the two forms are found at a low frequency) between two populations, the populations can still be accumulating differences in their genomes—differences that could eventually lead to the formation of new species. Comparing results in Anopheles...

New evidence supports century-old theory of cancer spread

...egan testing the theory in 1993, when they created hybrids in the lab by fusing mouse melanoma cells with mouse macrophages. "Their behavior was astonishing," said Pawelek. "In culture dishes, fused cells were extraordinarily motile compared to unfused melanoma cells. They spread rapidly when implanted in ...

Open Source Biotechnology alliance for international agriculture

...s marker assisted selection, or even true breeding hybrids of crop species that would allow farmers in developing countries to use hybrid seed year after year. Adds Jefferson, "Scientists and farmers need better options for problem solving, that meet their priorities, work within their constraints, build on ...

Researchers release new variety of asparagus

...ciate at UCR, and I are working on other promising hybrids that are in trial at the moment, some of which may.... Next, these plants are crossed and the resulting hybrids are evaluated for yield, spear quality and other essential traits. When two parents that produce go...

Molecule by molecule, new assay shows real-time gene activity

...to a handful of protein molecules, these Tsr-Venus hybrids migrate to the cell membrane, where each attaches firmly. The clearly visible flash from each Tsr-Venus molecule -- which when viewed across a population of cells looks somewhat akin to a sea of cellular paparazzi -- serves as an indication of that s...

Invasive species alter habitat to their benefit

.... In the marshes she studied, Farrer found that hybrids were more common than native cattails. She also no...te around hybrids. A third plot received both live hybrids and litter, and the fourth was left alone. Litter accumulation was the deciding factor, she found...

Study provides new understanding of spontaneous hybridization

...y crossing two parent species. Not only were these hybrids resistant to the insects that attack sunflowers, they also produced more seeds than the uncrossed plants. "The results show for the first time that adaptive trait introgression can be a potent evolutionary force, broadening our view of the mechanis...

OHSU study says stem cell 'fusion' occurs in tumors

...d in repair of the epithelium, but the cell fusion hybrids that remain are generally unstable. Fusion may be an underlying molecular explanation of why these cells might be more susceptible to cancer development." In the PNAS study, Wong and her colleagues transplanted bone marrow cells from female mice int...

Researchers find protein that silences genes

...role in nucleolar dominance. They made transgenic hybrids in which each of the deacetylases were knocked out one by one and then examined the plants to see if there were effects on nucleolar dominance. In this process they found that knocking down HDA6 eliminated nucleolar dominance, such that the normally...

Sunflower speciation highlights roles for transposable elements in evolution

...three sunflower species that arose in evolution as hybrids of the same two parental types have undergone a ma...t. The nuclear-genome size differences between the hybrids and their parental taxa occur in spite of the fact that all species possess the same number of chrom...

Scientists find mutations that let bird flu adapt to humans

...umulated enough genetic mutations to be considered hybrids of animal and human viruses, Kawaoka notes. ...

Geneticists discover genes that make fruit fly hybrids sterile

While hybrids -- the result of the mating of two different speci...hed light on what causes lethality or sterility in hybrids in general and, in a larger sense, offers clues to how species evolve from common ancestors. The r...

Spud origin controversy solved

...both Andean and Chilean types, as well as possible hybrids of the two. “In combination with other historical, molecular, agronomic, and crossing data, these findings support a hypothesis of multiple early introductions of both Andean and Chilean germplasm to the Canary Islands and to Europe,?said Dr. Davi...

1