Gene regulation, not just genes, is what sets humans apart
...ess by which genetic changes that aid survival and reproduction spread throughout a species, has targeted the regulation of many genes known to be involved in the brain and nervous system and in nutrition, said Ralph Haygood, a post-doctoral fellow in the laboratory of Duke biology professor Gregory Wray. Haygo...Genetic analysis finds greater threat in frog-killing fungus
...ultiple, related genotypes and signals that sexual reproduction is occurring." The findings could help explain the global spread of this pathogen, which has also been found in South America, Australia, Europe and Africa, said the researchers. While human-assisted spread is possible, the fungus has infected amph...Scientists prove that disputed Korean stem cell line comes from an unfertilized egg and not cloning
...rgone in vitro fertilization as a form of assisted reproduction therapy for infertility. Parthenogenetic ES (pES) cells are derived from embryos created by artificial activation of eggs in the absence of sperm. ES cells generated by somatic nuclear transfer (ntES) are derived from embryos that are created when th...Discovery in plant virus may help prevent HIV and similar viruses
...ve been able to genetically modify a plant to halt reproduction of a related virus. Cauliflower mosaic virus attacks a group of plants that includes the largest number of agriculturally important plants in the world. The plant virus and HIV, which causes AIDS, use the same process to multiply in their victims' ...Rare example of Darwinism seen in action
... a controversial theory of genetic conflict in the reproduction of those animals that support their developing offspring through a placenta. The conflict has been likened to a battle of the sexes or an arms race at the molecular level between mothers and fathers. At stake: the fetuss growth rate and how much th...Zebrafish: It's not your parents' lab rat
...alled LMO4 that's known to play roles in both cell reproduction and in breast cancer. Using the tools of biotechnology, the team studied zebrafish that couldn't transcribe the LMO4 gene, and they observed marked enlargement in both the forebrain and optical portions of the embryos. When they overexpressed the LMO...Rapid evolution of defense genes in plants may produce hybrid incompatibility
...ity that can result in speciation. Because plant reproduction often requires an outside agent like a pollinator or the wind, which spreads pollen far from the parent plant, the offspring can be hybrids between parents from two different populations or even from two different although closely related species. ...Illinois researchers presenting at ASPB Annual Meeting in Chicago, July 7-11
...ss to plant scientists due to its quick growth and reproduction cycles and simple genome. The University of Illinois also will post five research studies from various plant science labs at the Joint Congress. Two of these University of Illinois-based studies, are extensively described in separate news releases...Complementary therapy for infertile women may reduce chances of pregnancy
Complementary therapies in assisted reproduction may diminish the effectiveness of medical treatment for infertility in women, a scientist will tell the 23rd annual conference of the European Society of Human Reproduction and Embryology in Lyon, France, (Wednesday 4 July). Dr. Jacky Boivin, from ...Complex ART procedures more likely to lead to umbilical cord abnormality
Lyon, France: The more complex the assisted reproduction procedure, the more likely the umbilical cord dev... births in the region since 1964. Since assisted reproduction was rather rare until the mid-eighties, said Mrs. Delbaere, we analysed twins born between 1985 and ...Germany's embryo protection law is 'killing embryos rather than protecting them'
...tion law is not in accordance with ART [artificial reproduction technology] practices now. Foetal reduction is being used in Germany much more than was expected and the German administration must face up to the situation that the 1991 law prevents optimal treatment of the patient and does not protect the embryo e...Stressed-out African naked mole-rats may provide clues about human infertility
...stress act through areas of the brain that control reproduction and, as it is likely that such neuroendocrine path... in humans. Dr Faulkes said: Social suppression of reproduction in marmoset monkeys is very similar to that in naked mole-rats, and as these are primates the applic...Modern brains have an ancient core
Hormones control growth, metabolism, reproduction and many other important biological processes. In ...ll types secretes vasotocin, a hormone controlling reproduction and water balance of the body, the other secretes a hormone called RF-amide. Each cell type has a u...Wood ant queen has no egg-laying monopoly
...ts, such as bees, wasps, and ants. However, worker reproduction as frequent as observed in Formica is exceptional,...kers favor the queen as the egg layer, and prevent reproduction by egg laying workers. When the worker control is effective, egg laying workers do not gain any repr...Changes in chromosomal constitution of preimplantation embryos suggest caution in genetic screening
...out the value of switching to a different assisted reproduction technique, for example egg donation....Children born after PGD as healthy as those born after conventional IVF treatment
...jor malformations than those born after artificial reproduction technologies (ART) without PGD, a scientist will tell the annual conference of the European Society of Human Genetics today. Professor Ingeborg Liebaers, from the Research Centre for Reproductive Genetics, Free University of Brussels, Brussels, Belgi...Marine phytoplankton changes form to protect itself from different predators
... shift suppressed either the feeding or growth and reproduction of the consumer to which they were responding. The role of this phytoplankton has been controversial in the scientific community, with some arguing that Phaeocystis makes a good food source for higher creatures in the cold oceans, while others cont...Largest synthetic gene ever built offers insights into anti-malarial drug resistance
... followed by repeated cycles of mounting parasitic reproduction within red blood cells and accompanying fever. During red blood cell infection, P. falciparum degrades the hemoglobin in the red cell, producing a toxic byproduct known as heme, which the parasite then crystallizes so that it won't be poisoned by it....Scientists develop new drugs to fight colon and breast cancer more effectively
...e 5-FU against the benign cells, thus avoiding the reproduction of new carcinomas or other side effects. We discarded compounds until we finally found six which have shown to be better than currently used drugs, says Caba Prez. Research on cell lines So far, the study has been conducted on cell lines, and n......where some individuals put more emphasis on future reproduction than others. Individuals who invest in future reproductive success evolve to be consistently risk-averse in different behavioral contexts (e.g. encounters with predators and aggressive interactions), whereas individuals who put emphasis on current re...