All Life on #Earth Comes From One Single Ancestor. And It's So Much Older Than We Thought.
Scientists have pushed back Last Universal #CommonAncestor (#LUCA) origin by hundreds of millions of years.
A study suggests that this organism likely lived on Earth only 400 million years after its formation.
Further analysis also shows that this life form likely sported an early immune system, which means it was probably fighting off viruses.
https://www.popularmechanics.com/science/environment/a65933876/one-single-ancestor-life-luca-discovery/

Our last #commonancestor lived 4.2 billion years ago—perhaps hundreds of millions of years earlier than thought
#Genomes of diverse #microbes point to early #evolution of a rudimentary #immunesystem
The last ancestor shared by all living organisms was a microbe that lived 4.2 billion years ago, had a fairly large #genome encoding some 2600 proteins, enjoyed a diet of hydrogen gas and carbon dioxide, and harbored a rudimentary immune system for fighting off viral invaders.
https://www.science.org/content/article/our-last-common-ancestor-lived-4-2-billion-years-ago-perhaps-hundreds-millions-years

All people with #blueeyes share a #commonancestor

https://www.simplemost.com/all-people-with-blue-eyes-share-common-ancestor/

Did you know #blue #eyes are actually a #geneticmutation?

#AncestryDNA
#CommonAncestor

The labelling of Ancestry DNA matches as being with common ancestor has gone wonky these past few days.

I found matches on the matchlist without CAs that when clicked are listing CAs.

This is weird.

It would be rather nice if Ancestry were to establish a presence on Mastodon to see our observations.

#FamilyHistory

So basically, we're all jellyfish:

WRITER FUEL: After decades of debate, scientists believe they have identified the most recent ancestor of the sister to all animals via the novel use of an analytical technique.

https://www.limfic.com/2023/08/23/writer-fuel-were-all-jellyfish/

#LimFic #LiminalFiction #WriterFuel #Writers #Authors #WritersofMastodon #StoryIdeas #Biology #Evolution #CommonAncestor

Referenced link: https://phys.org/news/2023-06-clues-complex-life-roots-common.html
Discuss on https://discu.eu/q/https://phys.org/news/2023-06-clues-complex-life-roots-common.html

Originally posted by Phys.org / @physorg_com: http://nitter.platypush.tech/physorg_com/status/1669024664402763791#m

New clues about origin of complex life trace roots to #commonancestor @utaustin @nature https://www.nature.com/articles/s41586-023-06186-2 https://phys.org/news/2023-06-clues-complex-life-roots-common.html

@gcbias
Some #FoodForThought from the #researchpaper linked above💡💡💡

“Importantly, in my view, the term ‘genetically similar to’ also helps to avoid the assumption of homogeneity within labels; ‘similar to’ does not imply ‘same as’. Similarity-based sample descriptors also move us some way to acknowledging the continuous nature of #geneticvariation across #humangroups in our sample descriptions. I am more genetically similar to some samples than I am to others, but that does not imply that there are natural groupings. Nor do similarity-based labels imply how I, as an individual, might choose to identify or what distribution of environments I might experience. For example, a person may be genetically similar to 1000 #Genomes samples labeled Southern Asian, yet in itself this similarity does not identify them as Southern Asian, whereas stating that a person has ‘Southern Asian #geneticancestry ’ comes much closer to making that linkage in people’s minds.
Working out the #genealogicalhistory of individuals and of groups of people from around the world is a fascinating area of research, but it should not be the day job of the majority of researchers in the field of #humangenetics , who instead need accurate sample descriptors of current day #geneticdiversity that aid clear communication.”
END OF EXCERPT

~

Adding colour to #discourse with this screenshot attachment and link. Extraordinary future ahead in the field of human genetics and #humanidentity, in general. #TheLancet #AmbroiseWonkam #johnhopkinsuniversity #schoolofmedicine #geneticvariation #geneticmedicine #MckusickNathansInstituteofGeneticMedicine

https://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736(22)00880-7.pdf

https://doi.org/10.1016/S0140-6736(22)00880-7

Related
#AfricanGenomeVariationProject

#1000genomesproject #GhanaianGenome #OforiAcquah #geneticcounselling #yemaachibiotech #yemaachi #genomicdataset #Sicklecelldisease #malaria
#SarsCoV2 #researchgate
#geneticdata #geneticdisease #ethnicity #populationdescriptors #racialmakeup #racialclassification #ethnicclassification #nationalacademiesofsciencesengineeringand #biomedicalresearch #rx #med #ethnicorigins #dei #biodiversity #bloodbank #organdonor #geneticlandscapes #socialdeterminantsofhealth #clinicalgenetics #therapeutics #diagnostics #treatments #ancientdna #genealogy #nondarwinian #demography #demographics #polygenics #nationalinstitutesofhealth #nih #medicine #geneticancestor #humangenetics #biomedicine #biomed #racialidentity #ancestralidentity #culturalidentity #crt #criticalracetheory #anthropology #biobank #23andme #familytree #familyheritage #ancestralheritage #commonancestor #biomedical #populationbiology #geobiologie #geobiology #geneticmapping #blooddonor #blooddonation #populationhealth #admixedancestry #phenotype #phenotypingdata #phenotypedata #americanjournalofhumangenetics

Referenced link: https://phys.org/news/2022-09-reconstruct-genome-common-ancestor-mammals.html
Discuss on https://discu.eu/q/https://phys.org/news/2022-09-reconstruct-genome-common-ancestor-mammals.html

Originally posted by Phys.org / @physorg_com@twitter.com: https://twitter.com/physorg_com/status/1574859994251595827#m

Researchers reconstruct the genome of the #commonancestor of all #mammals @PNASNews https://pnas.org/doi/full/10.1073/pnas.2209139119 https://phys.org/news/2022-09-reconstruct-genome-common-ancestor-mammals.html

Fascinating findings. A write-up of the 'Wonderchicken', which has features that resemble ducks and chickens and show their shared a common ancestor "sometime near the very end of Cretaceous times, known as the K–Pg boundary."

https://natureecoevocommunity.nature.com/users/363813-daniel-j-field/posts/61406-how-we-found-the-world-s-oldest-modern-bird-skull

#Palaeontology #Birds #Fossils #Chickens #Ducks #CommonAncestor