Two genetic traits giving Africans malaria protection lose effectiveness when they occur together
...ovember 2005)--Two genetic conditions--sickle cell trait and a mild version of the blood disorder known as ...associations and properly understand them. If one trait can interfere with the effects of another, you may miss an association where one truly exists. Conv...Studying substitute animals will not save endangered species
...ecies' viabilities must be identified. Third, the trait value and the disturbance threshold must be established for the substitute. The authors see these hurdles as almost insurmountable, especially in a field as cautious as conservation. "Where at all possible, we advocate making every possible effort ...CO2 sensing proves critical for fungal pathogens to adapt to life in air and human hosts
...gens and the role of adenylyl cyclase in virulence trait regulation by CO2. Furthermore, it may in time facilitate the development of a new class of antimicrobial agents....Evidence for expanded color vision for some colorblind individuals
...cells, women who are carriers of the deuteranamoly trait (and hence have one normal X chromosome) are predicted to express four types of cone photoreceptor--the three normal cone types, as well as the cone with a shifted wavelength sensitivity. Thought it is unclear whether this would appreciably affect co...NC State scientist assists in cracking code of dog genome
...sequence. So the gene that gives a dog a desirable trait may be sitting next to a gene that causes cancer. Select for the desirable trait and you may also select for the cancer. "We have also begun to identify genetic changes in a variety...Scientists fetch useful information from dog genome publications
...s, Lark's group reports forty QTL, or quantitative trait loci, that are responsible for determining skeletal size in dogs. A striking aspect of these loci is that they control functionally related skeletal traits. "For example," says Lark, "one of the QTL that we identified controls both pelvic size and ...Fish gene sheds light on human skin color variation
...ant. Either a variant is selected for because the trait produced is better suited to the current environment than other traits and other traits are less capable of competing, or the variant is sexually selected. Sexual selection occurs because individuals choose mates with certain characteristics that ar...Loosen leash on cancer protein 'watchdog,' researchers say
...we began," Mendrysa said. "These mice had a family trait that typically made them develop cancerous lesions in their intestines, but our main goal was to see whether p53 sped up the aging process. Fortunately, we got more kinds of good news than we initially expected." Mice with such a predisposition gener...Evolution study tightens human-chimp connection
...e species, "A long generation time is an important trait that separates humans from their evolutionary relatives," said Navin Elango, graduate student in the School of Biology and first author of the research paper. "We used to think that apes shared one generation time, but that's not true. There's a lot ...Crop development efforts get major boost
...genome. Maize represents an excellent platform for trait studies due to its outbreeding nature and long history of substantial public and private sector investment. Finally, wheat represents a complementary cereal model by virtue of its relatively close relationship to rice and extensive genetic informatio...Personalized treatments according to type of obesity
...7Glu polymorphism. That patients with this genetic trait presented a greater index of body mass than normal...y in understanding the reason that women with this trait are more resistant to weight loss. The ultimate objective of the project of which Ms. Antn forms par...Researchers evolve a complex genetic trait in the laboratory
Duke University biologists have evolved a complex trait in the laboratory -- using the pressure of selection to induce tobacco hornworms to evolve the dual trait of turning black or green depending on the temperature during their development. The biologists have...Early human ancestors walked on the wild side
...om that bipedalism was a rather stable, unwavering trait once it evolved in human ancestors. "While we know a lot about how teeth and facial structures changed over time, it was thought that once our ancestors became bipedal, there were few, if any, changes in the ankle associated with walking on two legs,...Virginia Tech helping to develop higher quality, disease-resistant wheat varieties
...t are located in the same chromosome region as the trait of interest to select for genes controlling useful...recision in selection of varieties having the best trait combinations. Researchers will work with USDA genotyping laboratories to provide thousands of molecu...Ernst Mayr's theory illustrated in genetic epidemiology studies
...hers at any given time. "The real causation of the trait is at the interaction level and not the single gene level, and therefore if you change just the frequency of the gene you'll change what's major and what's minor, and that's another way of saying you're changing how natural selection acts on the syst...Texas A&M to participate in applied wheat genome research
...ithin a gene,that signals the presence of a useful trait such as disease resistance. In traditional breeding, if 1,000 rows of wheat lines are planted,about half will be thrown out due to stripe or leaf rust problems, hesaid. "If we can look at the DNA before planting those rows and determinethey hav...UCR researchers design chip that can improve citrus varieties
...he citrus array helps us quickly examine a certain trait in citrus," said Mikeal Roose , a professor of ge... leader of the three-year research project. "For a trait posing a problem for the consumer, such as an undesirable flavor, we can identify genes associated w...Moderate lifetime reductions in LDL cholesterol dramatically reduce risk of heart disease
...ence variations in the same gene, that impact on a trait of interest, and you see similar kinds of effects." The difference in LDL cholesterol between individuals with the normal form of PCSK9 and those with these sequence variations is comparable to the reduction that can be achieved with a low dose ...MSU researchers shake out basis for rice domestication
...ains easily falling off of plants. The shattering trait of the wild forerunners of rice and cereals prevents effective field harvest and is undesirable for cultivation. "What we can learn from historical plant domestication will benefit our ongoing and future effort to domesticate energy crops that will b...Book on avian hybrids gives startling new insights into birds' breeding habits
...their parents, they may resemble one parent in one trait while resembling the other with respect to another. And while avian hybrids commonly mix the physical traits of their parents, identifications based on such traits can be dicey in some cases and further evaluation by molecular genetic techniques may ...