Natural sunscreen found in fish eggs can be made by E. coli factories

 

Image courtesy of WILDLIFE GmbH / Alamy

Joel Kontinen

Intelligent design has provided  zebrafish eggs to produce a chemical that keeps the suns rays  from harming people. The chemical is known as gadusol.

A team led by Ping Zhang at Jiangnan University, China, inserted genes from zebrafish into the bacterium Escherichia coli to give it the enzymes needed to synthesise gadusol. Then, by using small RNA molecules to dial up gadusol production in the bacteria and tweaking their growing conditions, they increased the yield by nearly 93 times, from 45.2 milligrams per litre of liquid growth medium to 4.2 grams per litre.

In experiments, gadusol displayed antioxidant properties comparable to vitamin C, suggesting it may help neutralise free radicals that cause damage in cells.

Gadusol is transparent, unlike melanin, and yet is perfectly tuned to block out harmful UV rays from the sun, which makes it ideal for organisms hiding from prey. “I think we haven’t necessarily given it the praise that it deserves,” says James Gagnon at the University of Utah, who was part of a team that discovered gadusol’s role as a sunscreen in fish embryos. “This is a great molecule.”

Gadusol is found in the eggs of zebrafish, salmon and sturgeon, as well as coral, where it protects organisms from ultraviolet damage. But it’s only found in small quantities so extracting it from organisms for use as a sunscreen is impractical

Gagnon says further testing is needed, but the compound is likely to be safe for humans and the environment because so many animals already use it. Thanks to its transparency, it might also avoid the milky residue that some current sunscreens leave on the skin.

“Everyone wants to hint that this is going to be a great sunscreen for humans,” says Gagnon.

Source:

 Matthew Sparkes 2026 Natural sunscreen found in fish eggs can be made by E. coli factories | New Scientist 13 May 

 

Just hatched zebrafish know how to count

Image courtesy of blickwinkel / Alamy Stock Photo. 

Joel Kontinen 

When do animals know how to count. Some individuals, Such as zebrafish can count when they are only four days old,

This is  an ingreadient that intelligent design does for animals, elephants know the difference betwen low and high numbers of fruit, and for instance hony bees and salamander know how to count, 

When do animals know how to count. Some individuals, Such as zebrafish can count when they are only four days old.

This is  an ingreadient that intelligent design does for animals, Elephants know the difference betwen low and high numbers of fruit, and for instance Stingrays,  honey bees and salamander know how to count., 

What is interesting is that at least one plant, the Venus flytrap, also knows how to count.

For Darwinists, animal intelligence is an enormous dilemma, and plant intelligence even more so.But in a created world we would expect animals and plants to show evidence of intelligence..  

Source:

Murugesu,  Jason Arunn.   Zebrafish seem to be able to count when they are just four days old.  New Scientist. 23 March. 

An extra fin bone has brought fish on shore

 

Image courtesy of Der Naturen Bloeme/Nationale Bibliotheek, fair use doctrine.

Joel Kontinen

An extra fin bone has been shown to be the Darwinian mechanism that brought fish on shore.

M. Brent Hawkins, a postdoc at Harvard Medical School, found clues while studying the development of zebrafish. He found out that two mutated genes, vav2 and waslb, on two different chromosomes that independently added bones to the fins. And they didn’t just create the bones themselves: The mutations also made the blood vessels, joints, and muscles needed to make the bones work, he and his colleagues report today in Cell. The fish’s development “follows a very similar process to the formation one of the long bones in our arm.

This isn’t the first time evolutionists speak of  fish getting legs.

But it  is just a bit of evolutionary just so-story.

 Source  

Pennisi, Elizabeth. 2021. Mutant zebrafish with extra fin bones may hold clues to how the first animals walked on land  Science  4 February.