Adventure Ausrama Blog

Genetically modified things are dangerous. Whoops! But we are already using them. GM crops have already crossed with normal plantings in adjacent farms. The producers of the GM seeds are suing these farmers for using the crossed seed which they claim belongs to them. Dogs were given a virus that had been genetically modified: the DNA integrated into the host genome. Oncogenes were activated. The virus entered into cells that influence cell growth. The affected cells' rate of division increased dramatically. Modified viruses are a popular way of treating people now. Practitioners had a ho hum attitude to this. It has to changed. The final result of such treatment will probably be cancer. Researchers have known for decades that tests on very young mice were detrimental. However, they pushed blindly ahead. The project on the dogs has been concluded. Calls were made to continue for another five years to discover whether the canine develop tumors. Vested interests stop it. Ultimatel

Genetic testing should not be used for herpes, Alzheimer's or Coeliac disease. It seems that genetic testing is not all good for health problems. MedicineWise, a body of doctors and patients, has released an advisory list for scientists. DNA testing should no be used for coeliac disease, nor for herpes or Alzheimer's. Identifying a "causative" gene only indicates a probability. Indeed, screening for herpes in genetic testing for sexually transmitted disease is a misuse of resources.  Millions of dollars of government funding is wasted every year. A DNA finding is not a black and white issue. Gene determination is not 100 per cent. Many people with a "faulty" gene do live without ever getting the so called predetermined disease. Furthermore, patients can be falsely reassured by a DNA test. ◆ Chemistry by Ty Buchanan   ◆                Australian Blog   ★   Adventure Australia . . . . . . . . . . . . . . . . . .

genetics The gene responsible for schizophrenia has been found. Contrary to the popular view the ailment doesn't only cause multiple personality issues. It has three variants: 1) Positive , causing delusions, dysfunctional thoughts, movement irregularities and hallucinations; Negative , unhappiness, not finishing activities, reduced speaking and low bodily expression; and Cognitive , poor decision making, low attention, memory problems. Ten in a thousand people suffer from schizophrenia.   It usually begins before the age of 30 years. In 2014 an international program was organized to isolate the causative gene. It has been identified in the major histocompatibility complex (MHC). The C4 gene goes wild in sufferers, binding to more foreign molecules. This reduces the synaptic connections in the brain. Hopefully, a new more specific medication can be produced from the research data. Currently, drugs are not effective because the target has been unclear.  lifelong tre

Do you think that extramarital relationships are morally wrong? Well, ninety one percent of people do. However, men are predisposed to wander due to their genes. A fifth of married men had on the side affairs over the last two decades. More than 10 per cent of women who are "programmed" to be loyal to one man also had liaisons. The most common excuse given is that the marital relationship is not fulfilling. Of course, the proclaimed reason has little to do with the motivation. Other reasons put forward are moral flaws of one party, or this is the thing to do int today's society . Throughout history men have been away from home sowing their wild oats to increase the number of offspring, while their partners remained tied to the kitchen to feed the couple's children.  There have always been women who have not followed this path who have lived a profligate existence. A new slant on this is that some women have the vasopressin receptor gene which make

There is no way that Australia can prevent the extinction of some native animal species. Some can  be preserved with a national gene bank. Though a seed bank has already been set up to save native flora, nothing is planned for fauna. Present debate is centered on the loss of the northern and southern gastric brooding frog. If a gene bank had existed the frog would have been preserved. Australia has the worst record of native animals going extinct than anywhere else, not something to be proud of. Over 40 birds and mammals have disappeared since European settlement. Because government has been slow in allocating resources, private organizations have started gene banks. Indeed Taronga Conservation society Australia has stored genes from 20 native animals. This is far from adequate. Over 2,000 species need preservation. With the Taronga Conservation Society Australia, the Animal Gene Storage and Resource Centre of Australia at Monash University has a total of 100 endangered sp

There are serious problems involved in breeding top class cattle for the market. Like in breeding budgerigars recessive genes coming together can cause some young to be victims of early death. In creating the "perfect" animal, weaknesses have been seen in Angus cattle. The disease is call Development Duplication (DD). Its general name is polymelia. Embryos are dying and some are born with extra limbs. The disease is common in all cattle, but selective breeding has increase its prominence in Angus cattle. Some affected animals have had operations to remove extra limbs. This is complicating the issue particularly if they are used for breeding. Tests are available to identify the recessive gene causing the problem. It occurs at a rate of 3 per cent in the Angus breed. Pairing a sire with the recessive to a dam without it produces a normal calf. The recessive gene is passed on, however, not eliminated. It is believed that the presence of the gene has improved growth a

Human beings may be having problems with variable weather in Australia, but animals are coping well. Zebra finches, pelicans and woodswallows seem to know when the weather changes. If the Spring comes early they nest early. If it is too dry to breed they hold off until times are better. They change their breeding point by months either way. When glaciation was at its peak the woodswallow population actually boomed. In boom times there is a larger pool of gene carriers ideal for genetic selection when times become harder. More of the birds die off. Yet, the survivors have traits that suite the changed environment. Australia has the harshest of climates with long periods of drought. Consequently, birds such as pelicans live a longtime on a meagre diet so they can wait for good times to breed. Zebra finches seem to do well even when times are very hard. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/ http://adventure--australia.blogspot.com/atom.xml

Luck plays a large part in evolution. Climate suddenly changes and if by chance a species of animal carries suitable genes to flourish in the new environment that animal lives on. Other species die off because they cannot cope. New findings about the great white shark highlights this. Australian great whites and the Mediterranean type have genes that point to common ancestry. It is believed that a few related female sharks split up. Some going north to the Mediterranean from the larger gene pool in the south, or they peeled off from the main group in the Atlantic some going north the others going south. Narrow channels in the Mediterranean stopped this group from rejoining the Australian gene pool. This happened 450,000 years ago. Mutations since that time make the timeline clear. It is believed that swordfish and tuna the main food of the great white also split off from the their main groups. Great white sharks followed the food supply. http://www.adventure--australia.blogspot.com

Australia is fighting against the spread of red fire ants. This pest has invaded other countries such as the US. Nothing seems to work to stop their malicious takeover. They give a nasty bite. It was thought to be a simple kind of ant but studies have shown it to be a complex creature. It has two distinct variants in its social structure. Normally colonies keep their distance. On the other hand, many colonies do form a supercolony where queens work together and breed in safety. Ants of the supercolony do kill queens of isolated colonies. The ants are different genetically. Queens of individual colonies are fatter. This is to feed the first larvae when they start the colony. Queens who work together never need the "boost" fat. The change of a single gene dramatically changes physicality and behavior. It is contentious as to whether there will be an evolutionary winner. We just do not know at this stage. It is hoped that chemicals producing violent behavior can

All black people have black hair - right? This is an incorrect assumption. When Europeans first arrived in Australia they found some blonde Aboriginals. They thought that White sailors must have been shipwrecked off the coast and took Aboriginal wives. In the Solomon Island near northern Australia 10 per cent of black people have blonde hair. The sun has not bleached the hair white. European sailors are not responsible either. It is a random gene that causes it. This is proven as the tone of blonde is different from Europeans. A group of Islanders were tested for gene structure: forty two with dark hair and 43 'blondes'. The pigmentation gene was either coded with a "c" which produced blond haired people or 'T' giving dark hair. It is a recessive gene which means both parents must have the blond gene to have a blond child. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/ http://www.feeds.feedburner.com/Adventure

Gene therapy for brain injuries and illnesses may be a good thing, but this treatment changes the shape of brain cells. Researchers in Western Australia say there is nothing to worry about because damaged brain cells regenerate or live longer. They say this when there is no proof that in the long term everything will be alright. They say it is wonderful how brains cells function better after nine months of treatment. Apparently, the neurons become round due to new growth-promoting genes that stimulate them. The fact that surrounding genes away from the treatment area also change is in my opinion something to worry about. Obviously, when this occurs it cannot be reversed. Doctors admit that the way neurons deal with information after treatment is never the same again. Furthermore, they suspect that the long-term effects may not be beneficial to the patient. It is a good thing that researchers are looking for a way to stop gene therapy in its tracks if anything goes wrong. htt

The war over genetic manipulation of crops and the human body has not yet been won be either side. Recently Greenpeace destroyed a crop of modified wheat that had been genetically altered to raise fiber content which was intended to reduce bowel cancer. Cross contamination of non-modified crops on farms adjacent to land where GM food is grown was given as the reason for the attack. There are many dangers with gene replacement technology: Possible birth defects Anti-biotic resistance Control of patented GM seeds Vertical control of food chain Changes to soil balance Horizontal gene change to related crops Both sides of Australian politics support gene manipulation. Just why this is the case is a big question. Many Australians are troubled by GM use, though not so much by gene treatment in medicine. Like the nuclear power disaster in Japan, one gene related "accident" may end the optimism. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/