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Tag: "reproduce" at biology news

Carnegie Mellon scientists show brain uses optimal code for sound

...e. This is similar to a player piano roll that can reproduce any song by recording what note to press when the spike code encodes any natural sound in terms of the precise timings of the elemental acoustic features. Remarkably, when the researchers derived the optimal set of features for natural sounds, they ...

Amazonian terra preta can transform poor soil into fertile

...ound. That's not all. Scientists have a method to reproduce this soil -- known as terra preta, or Amazonian dark earths -- and say it can pull substantial amounts of carbon out of the increasing levels of carbon dioxide in the Earth's atmosphere, helping to prevent global warming. That's because terra preta i...

GPSDB, the free Gene and Protein Synonyms DataBase

...ound. That's not all. Scientists have a method to reproduce this soil -- known as terra preta, or Amazonian dark earths -- and say it can pull substantial amounts of carbon out of the increasing levels of carbon dioxide in the Earth's atmosphere, helping to prevent global warming. That's because terra preta i...

Genome sequencing is for ecologists, too

...f aquatic environments. Members of the species can reproduce both with and without sex, which has important implications in evolutionary biology and ecology. Species whose genomes have been sequenced are generally used for experiments in physiology and in developmental and cell biology, but rarely in ecology....

Study shows that cells have a natural defense against HIV

...IV from the body, but they do block its ability to reproduce and spread, and they restore most people with AIDS to good health. In time, however, HIV can develop mutations that render those drugs ineffective. "Our findings identify a new potential drug target, one that involves a natural host defense," say...

Sex: It's costly but worth it. Just ask a microbe

.... "There was always an assumption that microbes reproduce asexually, but they are actually asexual and sexual," says Xu. Using a fungus that has two sexes, A and Alpha, he established three populations: A microbes (females), Alpha microbes (males), and a combination of the two. When left to re-produce on th...

Discovery may speed forest biotechnology

...ible to genetically engineer trees that flower and reproduce more quickly. The long, slow growth of trees befor...ivation of the FT gene earlier, so that trees will reproduce at much younger ages ?months instead of years - and better lend themselves to conventional genetic m...

Researchers seek to solve mystery of natural HIV control

...viral medications are used, the virus continues to reproduce until it overwhelms the CD4 T helper cells, suppressing the immune response and leading to AIDS. In the early 1990s, it was recognized that a small minority of HIV-positive people remained healthy and did not progress to AIDS despite many years of i...

How healthy is that marsh? Biologists count parasites

... intermediate host is missing, the parasite cannot reproduce and hence will be underrepresented in the resident snail population, he explained. A survey of the trematode population in resident snails thus becomes a clever means of reconstructing the food web in the area, as the trematodes reflect the predator...

Even a little cooling helps after cardiac arrest

... intermediate host is missing, the parasite cannot reproduce and hence will be underrepresented in the resident snail population, he explained. A survey of the trematode population in resident snails thus becomes a clever means of reconstructing the food web in the area, as the trematodes reflect the predator...

WWF captures first-ever photo of wild rhino on Borneo

...t 13 found last year is viable and will be able to reproduce if protected from poaching. A full-time rhino monitoring team, funded by Honda Malaysia was established at the end of 2005 in Sabah to monitor the rhinos and their habitat, and keep poachers away. The team set up the camera traps in February. Camera ...

Bacteria have their own immune system protecting against outside DNA

...ein is introduced into bacteria. The bacteria then reproduce many times over, creating more of the protein each time they reproduce. The proteins are purified out from the bacteria, leaving behind only the useful protein. However, in that process, the yield of some human proteins produced in bacteria can be lo...

Fertility hope as study shows eggs survive in older ovaries

...numbers decline towards zero females can no longer reproduce ?resulting in the condition we know as menopause. Professor Findlay, Dr Kerr and their colleagues have found that the total number of eggs in young and normal healthy adult female mice do not decline over time and that overall egg number is maintain...

AIDS study challenges conventional treatment guidelines for HIV patients

...ach patient's initial viral load, in an attempt to reproduce more closely the situation that a physician would encounter in clinical practice, where a patient presents with an initial set of laboratory results and the clinician must try to predict how quickly that person's CD4 cell count will reach the danger ...

HIV exploits competition among T-cells

... Washington University, is the first to accurately reproduce all three stages of HIV infection. The first is marked by an initial spike in virus production that's immediately followed by dramatic drop as the immune system recognizes the threat, mounts a defense and destroys most of the invading viruses. The se...

Researchers discover key mechanism by which lethal viruses Ebola and Marburg cause disease

...rs early after infection and allows the viruses to reproduce rapidly and cause disease. "Currently, there is no way to treat most viral hemorrhagic fever outbreaks, and increased international travel, trafficking in wildlife, political instability, and terrorism have made emerging infectious diseases a globa...

U of S Vaccine and Infectious Disease Organization team discovers key step in flu virus replication

...y that supports the influenza A virus's ability to reproduce itself is activated, a finding that could pave the way for new drugs and vaccines. The paper will appear in the January 2007 issue of the Journal of General Virology and recently has been given advance on-line publication. "The work we are do...

Some butterflies travel farther, reproduce faster

...se venturesome butterflies are stronger fliers and reproduce more quickly compared to their less mobile female ...bility acts primarily on the females. Travelers reproduce more quickly This study examined whether there is a difference in physiology between the females ...

Designer babies - what would you do for a 'healthy' baby?

... genetic heredity, particularly when their time to reproduce begins to decrease.) Both men and women see genetic engineering as acceptable primarily for medical applications. Reproductive technologies and designer babies will be held in ARTS 01.02 at UEA on Tuesday September 5 from 4-6pm....

Why do some queen bees eat their worker bee's eggs?

...thesis was that worker bees, wasps and ants do not reproduce because most workers are half sisters. Instead the workers favor the queen's male progeny, since she has mated with multiple males, ensuring variation in the species. According to this theory, a species where the mother queen mates with multiple male...

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