Tag: "female" at biology news

UCSD medical researchers discover molecular pathway that turns a juvenile heart into an adult heart

... researchers also found differences in male versus female mice. The male animals experienced greater disease and died earlier than the females with mutated ASF/SF2. The UCSD study was funded by the National Institutes of Health (NIH). Additional authors were Xiangdong Xu, B.S., UCSD Department of Cellula...

Found: Missing sequence of the human Y chromosome

...sent in all 100 individuals tested, but not in any female controls, confirming that this sequence was a fundamental part of the Y chromosome. More surprising, however, was Rappold's finding that this "missing" sequence was not unique to the Y chromosome. Rather, this sequence exhibited between 95-99% homol...

Big, old fish key to restoring groundfish stocks

...coast from 1996 to 1999, the average age of mature female black rockfish declined from 9.5 to 6.5 years in a fish species that has a maximum lifespan of about 50 years. Soon after, many fisheries were in serious decline. Genetic studies by OSU researcher Michael Banks and his graduate students have also s...

Study in Royal Society journal on managing GM crops for environmental benefit

...95, Germany Evolution of juvenile growth rates in female guppies (Poecilia reticulata): predator regime or ...O Box 1050, OSLO, N-0316, Norway Sperm influences female hibernation success, survival and fitness in the bumble-bee Bombus terrestris by Dr B Baer and Profe...

New research shows in the animal world, it pays to be an imposter

...anlon the cuttlefish can switch between a male and female appearance 10 to 15 times per minute. "In the blin... time. The results, they say, are surprising since female cuttlefish of this species reject most mating attempts by any type of male 70 percent of the time. "...

Protein adiponectin appears protective against heart disease

..., higher levels of adiponectin were observed among female participants in comparison to their male counterparts," said Dr. Costacou, explaining that adiponectin levels in blood samples from women averaged 20.8 micrograms per milliliter, versus 16.5 micrograms per milliliter for men. "This is a significant d...

Evolution of classical polyandry: three steps to female emancipation

... to Emancipation Classical polyandry occurs when a female breeds with several males who will raise their offspring alone. New research suggests that three evolutionary steps are crucial for this type of mating system with reversed sex roles to develop. Firstly, males take on care of the eggs (the reasons w...

Why attractive (but costly) males get the girls

...measuring both the costs and benefits of mating to female crickets and their offspring and provide new evide...tness consequences of the various unions. Although female crickets, they found, paid a higher survival price for mating with attractive males, these females p...

Researchers find local environment directly influences adult stem cell reservoirs

...stem cell biology." The reproductive system of the female fruit fly, as in humans, contains a reservoir of adult stem cells. When the stem cells divide, they create two daughter cells, each with a distinct fate. One daughter travels away from the reservoir, divides further, and eventually becomes the egg an...

Quantum dots research leads to new knowledge about protein binding in plants

...chanism of interaction between the pollen tube and female tissue during reproduction. "Integrating materials science, chemistry and plant biology to understand how and where specific proteins act on a pollen tube is one more step towards a better understanding of the fundamental processes involved, namely ...

Monkeys pay per view

... information. Male monkeys "paid" in juice to view female hindquarters or high-ranking monkeys' faces, but required "overpayment" to view low-ranking monkeys' faces. Despite living in a captive colony, the value monkeys placed on information about potential sexual partners and powerful individuals matched t...

Glow-in-the-dark zebrafish at UH hold keys to biological clocks

...of spawn, with hundreds of eggs being laid by each female per week. This gives the scientists a better chance of identifying mutant fish whose biological clocks run fast or slow, providing the ability to trace the specific genes that create the anomaly. Putting UH a bit ahead of other institutions engaged...

A gene's fist 'kiss' sets off that affair known as puberty

...physical changes and emotional baggage of male and female puberty, respectively. "We now have very good evidence that the GPR54 gene and its switch, the kisspeptin protein molecule produced by KiSS-1, are key to the initiation of puberty, when GnRH is released," Dr. Plant said. "However, it's unlikely that...

US government list of cancer-causing agents grows

...are nasal tumors in rats and benign lung tumors in female mice. MeIQ, MeIQx, and PhIP are heterocyclic amine compounds formed when meats and eggs are cooked or grilled at high temperatures. These compounds are also found in cigarette smoke. They are listed in the report as "reasonably anticipated to be huma...

Beer-drinking rats count calories better than many people, UF researchers say

...ood, fluid and alcohol intake of six male and five female rats over several days in three separate experimen...alcohol mixed into a sweet gelatin. Both male and female rats cut back on their calories from food and maintained a consistent intake of overall calories dur...

Scientists find male finches frugal in their attempts to attract females

...rtility ends, the scientists could infer when each female had been at the peak of her fertility during the e...rprise, we discovered that males somehow ascertain female fertility and sing the most when trying to attract the most fertile females," Sockman said. "Thus, m...

Cricket's finicky mating behavior boosts biodiversity

...oing to be." In down-to-earth terms: "What turns a female cricket on? Why does she prefer one pulse rate over another? Whatever the reason, it's very important that she exercise this preference in order to keep the species distinct." Mendelson spent three and one-half years studying the Laupala cricket with...

Sexual cooperation: Mating increases longevity in ant queens

...nimal species. Males often try to manipulate their female mates during copulation--for example, by traumatic...eficial to males because, for example, they reduce female re-mating probability or boost their fecundity directly after mating, but they can be very harmful t...

First love ruins him for all others

...to males appears to be that wing feeding keeps the female occupied during the time it takes the male to transfer the sperm."...

A startling diary reveals the onset of autism

... are now 12 years old. Rutherford reports that the female twin is doing well, and read an early draft of Rutherford's research manuscript. The male twin "continues to struggle with language development, but is usually a happy child." The twins' mother has started a nation-wide organization that funds autism...

1 2 3 4 5 6 7 8 9 10

(Date:4/17/2014)... Current Biology on April 17 have discovered ... Brazilian insects, which represent four distinct but related species ... example of an animal with sex-reversed genitalia. , ... animals, Neotrogla is the only example in ... Yoshizawa from Hokkaido University in Japan. , During copulation, ...
(Date:4/17/2014)... the process whereby the genetic information of DNA ... proteins, which have numerous different functions in living ... intermediary during gene expression, by relating the genetic ... in manufacturing proteins. , By examining the ... in an organism at a given time, researchers ...
(Date:4/17/2014)... full of wild animals and plant life, but there,s ... churning away in the soil, decomposing organic matter and ... role these fungi play in ecological systems, their identities ... scientists has generated a genetic map of more than ... was published this week in the Proceedings of ...
Breaking Biology News(10 mins):In sex-reversed cave insects, females have the penises 2Rapid and accurate mRNA detection in plant tissues 2Stanford biologists help solve fungal mysteries 2Stanford biologists help solve fungal mysteries 3
Other Tags
deptpongpingecuadorsdridescendaudiovisualbirdbrainrealisticplaygroundscommercializesignedtransfusionsproposesmayorvaginal