According to some Christian outlooks we were made for another world. Perhaps, rather, we were made for
this world to recreate, reclaim, and renew unto God's future aspiration by the power of His Spirit. - R.E. Slater
Secularization theory has been massively falsified. We don't live in an age of secularity. We live in an age of
explosive, pervasive religiosity... an age of religious pluralism. - Peter L. Berger
Exploring the edge of life and faith in a post-everything world. - Todd Littleton
I don't need another reason to believe, your love is all around for me to see. - anon
Thou art our need; and in giving us more of thyself thou givest us all. - Khalil Gibran, Prayer XXIII
Be careful what you pretend to be. You become what you pretend to be. - Kurt Vonnegut
Religious beliefs, far from being primary, are often shaped and adjusted by our social goals. - Jim Forest
People, even more than things, need to be restored, renewed, revived, reclaimed, and redeemed; never throw out anyone. - anon
... Certainly God's love has made fools of us all. - R.E. Slater
An apocalyptic Christian faith doesn't wait for Jesus to come, but for Jesus to become in our midst. - R.E. Slater
Christian belief in God begins with the cross and resurrection of Jesus, not with rational apologetics. - Eberhard Jüngel, Jürgen Moltmann
Our knowledge of God is through the 'I-Thou' encounter, not in finding God at the end of a syllogism or argument.
There is a grave danger in any Christian treatment of God as an object. The God of Jesus Christ and Scripture is
irreducibly subject and never made as an object, a force, a
power, or a principle that can be manipulated. - Emil Brunner
Ehyeh Asher Ehyeh means "I will be that who I have yet to become." - God (Ex 3.14)
Our job is to love others without stopping to inquire whether or not they are worthy. - Thomas Merton
The church is God's world-changing social experiment of bringing unlikes and differents to the Eucharist/Communion table
to share life with one another as a new kind of family. When this happens we show to the world what love, justice, peace,
reconciliation, and life together is designed by God to be. The church is God's show-and-tell for the world to see how God wants
us to live as a blended, global, polypluralistic family united with one will, by one Lord, and baptized by one Spirit. - anon
The cross that is planted at the heart of the history of the world cannot be uprooted. - Jacques Ellul

Wednesday, February 12, 2014

Man's Ancient Past: Neanderthal Genes Helped Modern Humans Adapt to the Cold


neanderthal
Image by erix! via Flickr

"Interestingly, while earlier studies have estimated that 1 to 4 percent of a modern,
non-African human’s DNA has Neanderthal origins, authors of the Science paper
found that about 20 percent of Neanderthal genes live on in modern humans.
The researchers believe additional research based on a larger sample size may
reveal that our extinct relatives contributed a much greater share to our genome
than previously thought."

Neanderthal Genes Helped Modern Humans Adapt to Cold
http://blogs.discovermagazine.com/d-brief/2014/01/29/neanderthal-genes-helped-modern-humans-adapt-to-cold/#.Uu7q5lAo7qBBy 

January 29, 2014

You’ve heard that Neanderthal DNA lives on in the genes of many modern humans — now there’s evidence that it helped our early ancestors adapt to life beyond the tropics and subtropics of Africa.

As gene sequencing becomes increasingly sophisticated, scientists have been able to prove that early modern humans traveling out of Africa to Europe and Asia interbred with Neanderthals already established in those regions. As a result, most non-African humans today have at least some Neanderthal genes.

But, using new techniques to zero in on traces of Neanderthal DNA in modern humans, researchers found the genes were not distributed evenly.

No Balls About It

Neanderthal-origin genes are concentrated in areas of the modern human genome that regulate the appearance of skin and hair. This finding, researchers say, suggests the genes were beneficial to modern humans by giving them characteristics that helped them adapt to colder climates (like thicker body hair, for example).

Even more unexpected, scientists discovered certain areas of the modern human genome had no Neanderthal DNA. In particular, genes on the X chromosome and those concerning the testes had no Neanderthal origin. Researchers believe these segments of Neanderthal DNA in a male hybrid must have reduced his fertility and thus were not passed on to later generations.

Neanderthal DNA Today

To determine Neanderthal DNA distribution in the modern human genome, authors of today’s paper, published in Nature, used a method comparing known Neanderthal genetic patterns with samples from more than 1,000 modern humans to find archaic genetic material from our long-lost relatives that has survived in our species’ genome.

A separate paper, published today in Science, compared the Neanderthal genome with the genes of more than 600 modern humans and reached similar conclusions.

Interestingly, while earlier studies have estimated that 1 to 4 percent of a modern, non-African human’s DNA has Neanderthal origins, authors of the Science paper found that about 20 percent of Neanderthal genes live on in modern humans. The researchers believe additional research based on a larger sample size may reveal that our extinct relatives contributed a much greater share to our genome than previously thought.

Image by erix! via Flickr


No comments:

Post a Comment