Home Tags Science

Tag: science

World’s First Baby Was Born from the DNA of 3 People

World’s First Baby Was Born from the DNA of 3 People

Baby Boy Was Born With 3 DNA New Technique in Mexico

The world’s first baby was born with a new technique of combining DNA of three people in the embryo, in a process to fight mother’s genetic condition. The Scientist has revealed that the world’s first baby by using a ‘three person fertility technique’ was born.

The baby boy was born five months ago in Mexico to Jordanian parents, and he is healthy and doing well now. The baby has the DNA from his mother, father and tiny bit of genetic code from the donor. The procedure implemented by US Specialists in Mexico.

Sensors to Monitor Glucose Levels in Human Body Through Sweat

To ensure the baby boy was free from the genetic condition that his mother carries in her genes. The boy’s mother carries a genes disorder known as Leigh Syndrome. A fatal nervous system disorder which she passed to her two previous children who were died of the disease at the age of six and eight months respectively.

First 'three person baby' born using new method

Children with this disease will rarely live up to six to eight years. The couple met the Dr. John Zhang, an endocrinologist at New Hope Fertility Centre in New York. It was not approved in the US to try the three DNA technique.

He and his team members perform the controversial procedure in Mexico, where there are no rules. This technique called as Spindle nuclear transfer. The procedure involves removing the healthy nucleus from the mother’s egg. And then transfers it to the donor’s egg with the nucleus removed. It then is fertilized with father’s sperm.

Gluten-Free Diet May Be More Harmful For Your Kid’s Health:Study Reports

It results in providing DNA from three different people, the mother, father and egg donor.

“This is the very first time at least in human reproduction that the offspring produced with three parties – one sperm and different parts of two eggs,” Zhang said to the reporters. “So this is very revolutionary.”

The baby was born with no signs of disease, and there are very fewer chances to develop into the disease from his cells.

Satellite Imagery Can be Used to Predict the Regions of Poverty

Satellite Imagery

A journal Science study shows that the combination of machine learning algorithms and satellite imagery can help to predict poverty in parts of the world where data is unavailable. This new method found by Scientists of Stanford has been accepted that the lighting in night time can roughly indicate the region’s wealth.

The analysis is ineffective while dealing with world areas where there is often no power at all.
The idea of estimating poverty from satellite imagery is not the first of its kind. Surveys are costly, infrequent and at times, impossible to carry out in few regions.

World’s Largest Aircraft Airlander 10 alias,The Flying Bum’s, Takes the First Test Flight

Neal Jean, the lead author of this method, describes the usage of night time images and publicly available daytime imagery, as well as survey data, can teach a computer to estimate how poor or rich an area is. Jean along with his team, created their algorithm in two steps.

First, satellite images of Uganda, Nigeria, Tanzania, Rwanda and Malawi have been running through a neural network which finds the cities and villages and predicts where the lights would at night. For example, the system predicts the area with houses would be lit up at night.

World’s First Smart shirt from Arrow that connects with your smartphone

Step two adds economic survey data which is incomplete for the majority of the region, added larger context and granularity. For instance, the system could identify the village, but the survey data could provide the household income of that village.

When the system observes a similar village nearby without any survey data available, I could start an estimate of the household income in that village. This two-step model creates a more accurate picture of the wealth in that region when compared to the night lights model.

“The World Bank, which keeps the poverty data, has for a long time considered anyone who is poor to be someone who lives on below $1 a day. We traditionally collect poverty data through household surveys… we send survey enumerators around to houses, and we ask lots of questions about income, consumption – what they’ve bought in the last year – and we use that data to construct our poverty measures,” says Dr Burke, assistant professor of Earth system science at Stanford, told the BBC Science in Action programme.

World’s first video satellite to launch next summer

The system might be useful to find income differences between rural and urban areas. But still, the system has its limitations as it is not much good at finding minor differences within a dense urban centre.

Presently, the algorithm is offered only in five African countries where it has been tested. Due to the availability of data publicly, it’s just a matter of training the system to look at other parts of the world.

Mutation in DNA against Smoke Helped Early Humans Evolve Better than Neanderthals

Neanderthals Early Man

Early humans are said to have a genetic mutation which helped adapt to smoke exposure from fires. This genetic mutation served as an evolutionary advantage over other homo groups like Neanderthals, who were extinct 40,000 years ago.

Neanderthals were closely related to modern humans with 99.5% similar DNA.According to the findings of Researchers at Pennsylvania State University, a mutation in the aryl hydrocarbon receptor that regulates body’s response to poly-cyclic aromatic hydrocarbons was found only in the early human beings.

Belgian Scientist Created Solar Powered Machine: Turns Urine into Drinking Water

This may have made the beginning of the people more desensitized to the smoke toxins. Polycyclic aromatic hydrocarbons are chemicals which are released while burning oil, coal, trash, gasoline, wood, tobacco or other organic substances such as charcoal-broiled meat.

Our early ancestors who were around the smoky caves developed this mutation which helped us to come this far. According to Gary Perdew, Professor at Pennsylvania State University (Penn State) in the US, “Modern humans are the only primates that carry this genetic mutation that potentially increased tolerance to toxic materials produced by fires for cooking, protection and heating,”

Scientists develop Cinema 3D: A movie screen for glasses-free 3D

This mutation which helped in the evolution is located at located in the middle of the ligand-binding domain and is even found in present-day humans. The altered DNA must have helped effectively processing the polycyclic aromatic hydrocarbons and dioxins.

“If you are breathing in smoke, you want to metabolise these hydrophobic compounds and get rid of them. However, you don’t want to metabolise them so rapidly that it overloads your system and causes overt cellular toxicity,” Perdew added.

According to the evolutionary hypothesis, Neanderthals lack the mutation hence, if Neanderthals were exposed to large amounts of these smoke, it could lead to respiratory problems, decreased reproductive capacity for women and increased susceptibility to respiratory viruses among preadolescents resulting their extinction.

Scientist Controls Multiple Drones Just By Thinking

On the other hand, humans’ exhibit decreased toxicity because they are slowly metabolising these compounds than Neanderthals, researchers said.

“For Neanderthals, inhaling smoke and eating charcoal-broiled meat, they would be exposed to multiple sources of polycyclic aromatic hydrocarbons, which are known to be carcinogens and lead to cell death at high concentrations,” added Perdew.

The scientists examined the genetic material of nine modern human beings and compared with 45,000-year-old three Neanderthals and one member of Denisovans in Siberia. The mutation was absent in Neanderthals and Denisovans but found in modern man.

The study was published online at journal Molecular Biology and Evolution. The team plans to study the gene further to know where it came from and how it evolved.

Maratus Splendens: Spellbound “Peacock Spider” New Species Found by Aussie Scientists

peacock spider

Oh my goodness! I am very scared about Spiders as they are like nightmares for me and also for many. But here an Australian scientist is more passion about Spiders which has led to the discovery of seven new species of “Cute Spiders.”

An Australian Scientists find a new peacock spider with eight-legged arachnids. The commonly referred peacock spider falls under “Maratus Splendens” of the family Salticidae, due to their colorful abdominal flaps they called as “Peacock Splendens.”

The Sydney biologist Jurgen Otto is very much enthusiastic about the Arch with the discovery of a new set of “cute spiders,” which are beautiful, colorful and playful. They are believed to exhibit behavior like cats and dogs rather than like a regular spider and the number reached to 48 i.e. the number of species discovered.

Edinburgh University study on Red Squirrel Leprosy

While walking through Ku-ring-gai Chase national park, Sydney north, when he first came across, Otto told the Guardian “I am always looking on the ground when I walk around, mostly for mites and other small things, and I almost stepped on this little spider. That’s what started my passion.”

Describing the spiders is between three to five mm long and belongs to Salticidae family. “It is important to document all of these spiders and their behavior, and he just wanted to make a public record where he dedicated a spare bedroom to his “spider work Otto mentioned.

‘We are prisoners in our own homes’ More than 100,000 Bats Plague Tiny Australian Town

For more details on International jumping spider journal Peckhamia on Sunday, Dr. Otto’s day job is to study on mites at Dept of Agriculture and Water Resources.