Unlocking the key to human fertility
... match, however similar their DNA is, no viable offspring can be born. Occasionally, for example, with horses and donkeys, offspring are produced - but because the sperm and egg ... their development as embryos is abnormal and any offspring are almost always infertile. The research ...Postpartum Anxiety May Delay Puberty in Kids
... anxiety after giving birth and that their female offspring had delayed onset of puberty. Prolactin, which ... groups, mothers with low prolactin raising female offspring of mice with normal prolactin levels, and mothers with normal prolactin levels raising the female offspring of mice with low levels of prolactin. Puberty ...Outgoing Nature Could Get You to 100
... Perls and his colleagues decided to look at 246 offspring of those who lived to 100 to see if their ... norms for each trait. They found that the offspring of centenarians were more extraverted than the ... sources of help when needed, Perls said. The offspring of centenarians scored lower than the norms on ...Researchers identify personality traits
... Society . Previous research on siblings and offspring of centenarians have documented that exceptional ... runs strongly in families. Studies of the offspring of centenarians showed that their mortality is ... be important to the healthy aging observed in the offspring of centenarians. Using the NEO-Five-Factor ...What Moms Learned May Be Passed to Offspring
... exercise. These mice later gave birth to offspring with the same genetic mutation. But the offspring showed no signs of memory problems even though ... effect reached into the next generation. The offspring had improved memory even without an enriched ...Smoking during pregnancy fosters aggression in children
... light up during pregnancy can predispose their offspring to an additional risk: violent behaviour. ... Another risk factor for aggressive behaviour in offspring was smoking mothers with a history of antisocial ... 18 months to three and a half years. Aggressive offspring were characterized by their mothers as quick to ...deCODE and SGENE Consortium Discover Deletions in the Human Genome Linked to Risk of Schizophrenia
... first analyzed the genomes of a total of approximately 15,000 parents and offspring taking part in deCODE gene discovery programs and who had been genotyped ... 66 de novo CNVs, that is, CNVs present in the genomic DNA of the offspring but not in that of their parents. deCODE then tested these variants for ...Researchers Create First Targeted Knockout Rats Using Zinc Finger Nuclease Technology
... scientists used ZFNs to knock out an inserted reporter gene and two native rat genes without causing measurable effects on other genes. Importantly, offspring of the ZFN-mutated rats also carried the modifications, demonstrating the genetic changes were permanent and heritable. Together, these results ...Molecular Marker Identifies Normal Stem Cells as Intestinal Tumor Source
... Next, the researchers switched on cancer-producing machinery in the Prominin1 intestinal stem cells and used a fluorescent tracer to follow the offspring of these cells. Those studies revealed that the stem cells stopped making normal intestine and made tumors instead. "We saw a dramatic change in ...Women Who Gain Excessive Weight During Pregnancy More Likely to Have Overweight Children
... add that more research is necessary to clarify whether the association between greater gestational weight gain and increased odds of overweight in offspring is causal, and whether it exists in today's environment of increasing obesity. Dr. Wrotniak's coauthors were Justine Shults, Ph.D., of the Center ...Framingham Study Shows Parents Who Live Long Pass On Lower Risk of Cardiovascular Disease
... to examine cardiovascular risk factors in the offspring of longer-lived individuals using independent and ... family history. "Characteristics of Framingham offspring Participants with Long-Lived Parents, appears in ... . In the study, researchers examined 1,697 offspring age 30 and older (average age 40) whose parents ...Spread your sperm the smart way
... per mating to maximise their chances of producing offspring across a range of females, according to a new ... of resources into each mating he will get more offspring per mating, but at the expense of fewer matings. ... fertility per mating, it maximises the number of offspring he sires overall. Less attractive males secure ...Key to evolutionary fitness: Cut the calories
... while food was plentiful and produce as many offspring as this would allow them to. However, recent ... due to active control of maternal investment in offspring in order to maintain long-term reproductive ... when their energy reserves are low or when their offspring are kept in cooler temperatures, Brown hares are ...Bisphenol A exposure in pregnant mice permanently changes DNA of offspring
... known to cause a fertility defect in the mother's offspring in animal studies, and now researchers have found ... the scientists analyzed the uterus of female offspring and extracted DNA. They found that BPA ... The permanent DNA changes in the BPA-exposed offspring were not apparent in ...Hatchery fish may hurt efforts to sustain wild salmon runs
... if they survive and reproduce in the wild, their offspring will also be significantly less successful at ... to survive and reproduce of the wild-born offspring of hatchery fish means that adding hatchery fish ... study found that a fish born in the wild as the offspring of two hatchery-reared steelhead averaged only 37 ...The importance of being helpful -- Cooperative cichlids boost their own reproductive success
... pair by helping to raise the dominant pair's offspring and this has been shown to occur among ... (Neolamprologus pulcher) often help to raise the offspring of unrelated dominant females (a form of ... in exchange for the care they provided for the offspring of dominant pairsa behaviour that enhanced their ...Mothers give interloper's offspring a head start in life
... paternity in which the interloper's 'extra pair' offspring often outperform their half brothers and sisters. While the superiority of these extra-pair offspring has generally been attributed to improved ... more to do with mothers giving these 'extra pair' offspring a head start. The team from the Universities ...First documented case of pest resistance to biotech cotton
... susceptible insects from the refuges. The hybrid offspring of such a mating generally would be susceptible to the toxin. In most pests, offspring are resistant to Bt toxins only if both parents are resistant. In bollworm, however, hybrid offspring produced by matings between susceptible and ...Animal Protection Groups Condemn FDA's Endorsement of Animal Cloning
... to endorse the sale of cloned animals and their offspring for food. The agency moved forward with the ... mandatory moratorium on cloned animals and their offspring to be established immediately. The FDA's ... 50 percent of all calf clones suffer from Large offspring Syndrome, in which the animal is grossly ...Honey bee invaders exploit the genetic resources of their predecessors
... When the European old-timers mixed with the African newcomers, their offspring looked, and in most respects behaved, like the African honey bees. ... had been in South America for centuries, one might expect that the hybrid offspring would randomly pick up both the functional and nonfunctional parts of the ...OMT announces a breakthrough in the development of a novel human antibody platform
... Inc. to knockout a gene encoding rat immunoglobulin. The mutations in rat immunoglobulin caused no off-target effects in other genes, and offspring of the ZFN-edited rats carried the mutated genes. Together, these results demonstrate the ability to generate heritable, specific and permanent ...Microbix Files First Patent Applications On Novel Technology Platform For Large Semen Sexing Market
... billion Artificial Insemination (AI) market. Semen sexing is instrumental to the dairy industry due to the growing international demand for female offspring and the negligible value of dairy bull calves. "This market is attractive for its size and the absence of regulatory barriers, and importantly, our ...