Engineered mutant butterflies give a glimpse deep into the genetic roots of wing patterns, an international team reported Monday in the Proceedings of the National Academy of Sciences. The authors of the new study rearranged colors on butterfly wings by deleting a single gene using a genome editing tool called CRISPR.
What did we learn from the Fukushima disaster?
The overarching lesson learned from the Fukushima Daiichi accident is that nuclear plant licensees and their regulators must actively seek out and act on new information about hazards that have the potential to affect the safety of nuclear plants.
Did Fukushima cause human error?
The accident occurred at the Fukushima plant – the report notes in its conclusions – is the result of collusion between government, the regulatory agencies and TEPCO (the company operating the six reactors). …
What caused the most damage to Fukushima?
At the Fukushima nuclear power plant, the gigantic wave surged over defences and flooded the reactors, sparking a major disaster. Authorities set up an exclusion zone which grew larger and larger as radiation leaked from the plant, forcing more than 150,000 people to evacuate from the area.
What did scientists notice about the butterflies in Fukushima after the disaster?
Scientists found an increase in leg, antennae and wing shape mutations among butterflies collected following the 2011 Fukushima accident. The link between the mutations and the radioactive material was shown by laboratory experiments, they report.
How many wings butterfly have?
four wings
The four wings and the six legs of a butterfly are attached to its thorax. They have four brightly coloured and patterned wings, covered in tiny scales and are the only insects with scaly wings.
How was the Fukushima disaster handled?
Plant workers were put in the position of trying to cope simultaneously with core meltdowns at three reactors and exposed fuel pools at three units. Automated cooling systems were installed within 3 months from the accident. A fabric cover was built to protect the buildings from storms and heavy rainfall.
What can be learned from Fukushima that would help prevent future nuclear accidents?
Among the lessons to be learned from the accident at Japan’s Fukushima Daichii nuclear powerplant, according to a new report from MIT, are that emergency generators should be better protected from flooding and other extreme natural events, and that increasing the spacing between reactors at the same site would help …
What went wrong in Fukushima the human factor?
What Went Wrong In Fukushima: The Human Factor : NPR. What Went Wrong In Fukushima: The Human Factor Japanese officials already have concluded that the Fukushima Dai-ichi nuclear power plant was not designed to withstand the 40-foot tsunami that hit it on March 11.
Did Fukushima go prompt critical?
There was speculation although not confirmed within criticality accident experts, that Fukushima 3 suffered a criticality accident. Based on incomplete information about the 2011 Fukushima I nuclear accidents, Dr. Ferenc Dalnoki-Veress speculates that transient criticalities may have occurred there.
Why was Fukushima built on the coast?
Establishing watertight connections between emergency power supplies and key safety systems; and. Enhancing the protection of seawater pumps (which were used to transfer heat from the plant to the ocean and to cool diesel generators) and/or constructing a backup means to dissipate heat.
How did the nuclear disaster affect butterflies?
Mutant Butterflies Linked to Japan’s Nuclear Disaster. Severe genetic mutations were found in pale grass blue butterflies (Zizeeria maha) found near the Fukushima disaster, with so-called eclosion failure (left) in which the butterfly can’t fight its way out of its cocoon, and bent wings (left).
Are butterflies more likely to be mutant?
According to the study, the team found that areas with higher levels of radiation in the environment were home to butterflies with more mutant characteristics. In all, about 12 percent of the 144 butterflies were found to be mutant.
How dangerous is radiation to butterflies?
The butterflies from the sites with the most radiation in the environment have the most physical abnormalities, the researchers found. “Insects have been considered to be highly resistant to radiation, but this butterfly was not,” said Otaki.
Why do butterfly larvae mutate?
The researchers concluded that this higher rate of mutation likely came from butterfly larvae eating contaminated leaves and also from mutations of genetic material being passed on to subsequent generations by mutant parents.
