The general underlying principle of all gene drives is an organism that will produce offspring similar to themselves. Some characteristics are randomly passed on from parents to the next generation. However, gene drive forces a different type of inheritance that ensures a specific characteristic is always present in the next generation.
Scientists engineer gene drive using various molecular tools. Gene drive is not just a human invention; some occur naturally in insects. This type of genetic phenomenon has been well studied by scientists. To date, gene drive has been discussed in the media primarily in order to eradicate malaria. This may give you the impression that gene drive can be used only to drive mosquitoes to extinction. However, gene drive technologies are highly versatile and can be designed to bring about different outcomes.
They can also be applied in most insect species that scientists can study in the laboratory. Why insects? Insects reproduce quickly and produce lots of offspring, which makes them obvious candidates for a technology that relies on inheritance like gene drive. This is why insects are at the leading edge of gene drive research. Gene drive is a new technology that could provide a solution to a variety of insect issues society faces today.
For instance, a gene drive has been developed to stop a major crop pest, the spotted-wing Drosophila. Insecticide sensitivity could be spread through populations of this pest species to stop tens of millions of dollars in crop damage every year in the United States.
In the United States, millions of dollars have been spent on removing fire ants using techniques including chemical insecticides, but if these persistent ants are not completely eradicated, they invade again. Aside from how good insects are at circumventing our strategies to control them, another major struggle for controlling insects is finding them.
Insects have evolved to quickly find the opposite sex to mate, and gene drives, which are passed on by mating, can take advantage of this fact of insect life.
This also means this technology targets only the intended species, which is not the case for chemical insecticides currently in use. Insect scientists, inspired by natural examples of gene drive, have wanted to design gene drive in insects for decades.
For now, gene drive insects live in laboratories and none has been released into the wild. Still, a lot can be learned about how gene drive works while it is safely contained in a laboratory. Criticisms of gene driveUsing gene drive is not a universally popular idea. Criticisms tend to fall into three categories: ethical concerns, mistrust of technology and unintended ecological consequences.
Ethical concerns about gene drive are often motivated by larger issues, such as how to stop gene drive from being used in biological weapons by engineering insects that are more dangerous.
Then there is the question of who should decide which gene drive projects move forward and what types of insects with gene drive can be released into the environment. Societal mistrust of technology is a hurdle that some powerful, innovative technologies must overcome for public acceptance.
The issue of technological mistrust often stems from disagreements about who should be developing technology to control insects and for what purposes. The third common argument against gene drive technologies is that they might cause unintended consequences in the ecosystem because gene drive is designed by humans and unnatural.
What will happen to the natural ecosystem if a population, even of mosquitoes that make people sick, is driven to extinction? Will this cause threats to natural biodiversity and the security of food? These questions are ultimately asking the consequences of intervening in the natural order of the world. But who defines what is the natural state of an ecosystem? Ecosystems are already constantly in flux. Preparing for a future that may include gene drive insectsWhen a gene drive is developed, it is tailored to the needs of a particular situation.
This means the anticipated risks posed by each gene drive are project-specific and should be considered and regulated on a case-by-case basis. A responsible way to protect society from these risks is to advocate for continued research that enables scientists to describe and find solutions to them.
Beyond the science, regulatory and accountability systems are needed so that regulations are adhered to and public safety is protected. Researchers are also still exploring the science underlying the gene drive. Can gene drive be designed to be reversible or more efficient? Can the effect of a gene drive on an ecosystem be predicted? Such important unanswered questions are why even the most ardent supporters of this technology say more research is needed.
Society needs new tools to control insect pests and protect ecosystems, and gene drive promises to augment our toolbox. Tue, 14 Jul GMT Trump may be no good at leading America — but he's really, really good at lying US credibility has been contorted to protect the feelings of one man-child. He may be no good at leading the country through a pandemic and recession.
He may be no good at healing a nation that is deeply scarred by racist power. But he is really, really good at lying. An Olympic-standard, Guinness Book of Records fabricator of falsehoods. He regurgitates lies as rapidly and copiously as Joey Chestnut swallows hotdogs. Trump represents the historic high-water mark for verbal cheating, which is surely the only part of his short legacy that will feature in US history exams in It took him days to reach his first 10, lies, but just days to reach his second 10, lies.
This is nothing new for Trump, but it is something new for a democratic nation that proudly used to call itself the leader of the free world. In that time, the daily number of new American cases has tripled to more than 60, According to multiple news organisations, the White House sprayed out its oppo research about all the times Fauci supposedly got things wrong. But history has not looked kindly on his care of human souls nonetheless.
After three decades in charge of the National Institute of Allergies and Infectious Diseases, Fauci is clearly an expert in at least three things: science, politics and the sophisticated art of not giving a flying flask. Fauci dares to say that America is not, in fact, doing great, even when the red baseball cap claims otherwise.
This is not a fair fight. Only one of them suggested injecting disinfectant as a cure for Covid, which would obviously disappear like a miracle, after he protected the nation with a travel ban that was clearly perfect.
But it truly takes a village to allow such a spectacular village idiot to thrive. Kayleigh McEnany, the White House press secretary who promised she would never lie to the press, has spent the past two months, well, lying to the press.
One of your predecessors is now trying to sell grills on Instagram. In Trumpland, there is no herd immunity to this disease.
They have been infected for so long, they are happy to sneeze full viral loads in the hope that everyone succumbs to the same lies. So what if the polls consistently show their boss losing to Joe Biden by such large numbers that they are outside the margin of error?
The only margin of error that matters is saying something that might break the mirror that Trump stares at every day. While Trump is trying to whip up opposition to the Black Lives Matter movement, the country has already made up its mind. Because Donald Trump has lied so often, to so many people, that he believes his own version of reality.
We will endure six more months of Fauci-bashing before we can turn the tide on this pandemic. Fauci will of course survive. There are fears that the number of cases is growing rapidly, so what are the key trends?
Tue, 14 Jul GMT Global Sports Fishing Equipment Industry Tue, 14 Jul GMT UK, France move to extend rules on face coverings in public Britain and France moved Tuesday to make face coverings compulsory in more places as both countries try to get their economies going while at the same time seeking to prevent further coronavirus outbreaks.
Following days of procrastination and mixed messages, British Health Secretary Matt Hancock said the wearing of face coverings will be mandatory in shops and supermarkets in England from July On the other side of the English Channel, amid signs of a slight virus resurgence in France, President Emmanuel Macron said he also wants to require masks inside all indoor public spaces by Aug. The report said Reza Asgari was executed last week.
Judiciary spokesman Gholamhossein Esmaili said Asgari had worked in the airspace department of the ministry and retired in The protests in the city of Khabarovsk on the border with China were as large or bigger than almost any protests seen in Moscow in recent years, where opposition to Putin is normally concentrated.
The demonstrations demanding the release of the governor, who was arrested on murder charges, continued on Monday, though they were much smaller, with local media reporting that protesters numbered in the hundreds. The orbiter named Amal, or Hope, is the Arab world's first interplanetary mission.
The goal of contact tracing is to alert people who may have been exposed to someone with the coronavirus, and prevent them from spreading it to others. Health experts say contact tracing is key to containing the virus and allowing places to reopen more safely. Contact tracing is done in a variety of ways around the world.
Tue, 14 Jul GMT Fake pharmaceutical industry thrives in West Africa Law enforcement agencies are battling to break foreign-linked criminal syndicates. Tue, 14 Jul GMT Global vaccine plan may allow rich countries to buy more Politicians and public health leaders have publicly committed to equitably sharing any coronavirus vaccine that works, but the top global initiative to make that happen may allow rich countries to reinforce their own stockpiles while making fewer doses available for poor ones.
Activists warn that without stronger attempts to hold political, pharmaceutical and health leaders accountable, vaccines will be hoarded by rich countries in an unseemly race to inoculate their populations first. Dozens of vaccines are being researched, and some countries — including Britain, France, Germany and the U. Lee, 47, of Yukon, Oklahoma, professed his innocence just before he was executed at the federal prison in Terre Haute, Indiana.
Tue, 14 Jul GMT Foreign workers struggle to return to UAE amid virus limbo Eudinson Uy and his pregnant wife planned to return to their home in the United Arab Emirates after a vacation in Armenia, but due to a subsequent lockdown of the Gulf country over the coronavirus pandemic, she ended up giving birth there. Four months later, the Filipino couple and their baby boy are still stuck in Armenia, like thousands of others now trying to return to the UAE, which relies on a vast foreign workforce.
No cross-over voting is allowed in Alabama's party primaries, so this election — the the first to be held in the state since the coronavirus pandemic began — could provide a clear view into the extent of Trump's influence among Republicans. Trump has cast a long shadow over the Alabama Senate race, backing the political newcomer after turning decisively against his former Cabinet member.
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