Sunday, October 9, 2022

Between Our Genes and Our Dendrites: The Making or Breaking of Humans

 Nadene Goldfoot                                           

  Today's DNA scientists, perhaps at Family Tree DNA in Houston, Texas.  They show me that my ancient origins show the autosomal DNA I carry from ancient European groups are:  28% hunter-gatherers;  50% farmers;  22% metal-age invaders.  

Scientists can examine our genes by putting our spit under something like a microscope.  Our genes are in all our cells of our body.  To be exact, DNA, or deoxyribonucleic acid, is the blueprint of life, the sequence of chemicals that defines each human being as unique.

 Twins, but not identical twins: Esau, born 1st with ruddy complexion,  and then Jacob who was to become the father of 12 sons:  the 12 tribes of Israel, for Jacob's name changed to Israel when he struggled or wrestled with a heavenly emissary and overcame him, being then given the name, Israel.  Each twin is so unique.  

Think of Isaac and Rebekah who had their twin sons, Esau and Jacob, 20 years after they were married. The Bible says he was 100 years old and when "his eyes were too dim to see", when he called his eldest son, Esau, to give him his last blessing recognizing his birthright.  Their DNA were obviously closer than any other brothers or sisters would be, but still carried some different genes as well. Isaac was the son of Abraham who was born in about 1948 BCE, about 4,000 years ago. They had accumulated far less genes than we carry today.  I suppose they were in the hunting-gathering stage. 

In this example, Isaac and Rebekah were 1st cousins, so their DNA overlapped. Terah was the father of Abraham and Rebekah's father was Bethel  who was also a son of Terah.  Rebekah's brother was Laban, the man that her son, Jacob, worked for in order to marry Rachel.  He had been working for his uncle.    

Twin brothers married twin sisters and they bore sons who look alike.  Amazing!   

Actually, "Identical twins form from the same egg and get the same genetic material from their parents — but that doesn't mean they're genetically identical by the time they're born.

That's because so-called identical twins pick up genetic mutations in the womb, as their cells weave new strands of DNA and then split into more and more cells. 

On average, pairs of twins have genomes that differ by an average of 5.2 mutations that occur early in development, according to a new study." 

Human DNA contains 3,147 million chemical nucleotide bases (A,G, C,T).  The total length of DNA present in one adult human is about 2x10"13  meters, the distance from the earth to the sun and back.  The DNA in an average chromosome-we have 23 of those, is about 5cm long.  Almost all (99.9%) nucleotide bases are exactly the same in all people;  and 97% are the same as the chimpanzee's.


Dendrites are part of our brain.   Hopefully, we have grown a lot of them.   Dendrites are appendages that are designed to receive communications from other cells. They resemble a tree-like structure, forming projections that become stimulated by other neurons and conduct the electrochemical charge to the cell body (or, more rarely, directly to the axons).  The more we use our brain to solve problems, the more dendrites we grow.  They're like the star we earn for every puzzle we solve.  Einstein must have had a lot of them as his IQ was 180, with 100 being average.  

Willis suggests that the most pleasant and rewarding way to increase your dendrites is to “meet and interact with intelligent, interesting people.” Try tournament bridge, chess, even sailboat racing. And remember, researchers agree that it's never to late."                        

Science has shown that mankind went into hunting when first becoming humans.  After he wised up, he became farmers.  But did you ever wonder why our Native Americans were still at the  hunters' stage  when the Mayflower landed in 1620?  They hadn't gone through the farming stage that Europeans had.

             Grinding corn they grew, made own pottery, too

The exceptions were  a few more isolated tribes such as the Pueblo who lived in higher housing and couldn't get out to hunt as well.  They resorted to growing corn and that saved them.  Traditionally, Pueblo peoples were farmers, with the types of farming and associated traditions of property ownership varying among the groups. Along the Rio Grande and its tributaries, corn (maize) and cotton were cultivated in irrigated fields in river bottoms. Among the western Puebloans, especially the Hopi, farming was less reliable because there were few permanent water sources. Traditionally, women did most of the farming, but as hunting diminished in importance, men also became responsible for agricultural work.

It has long been thought that prior to white settlement, Indigenous Australians lived a nomadic, hunter-gatherer lifestyle. Now some scholars argue that the first Australians practised forms of agriculture and aquaculture, writes Cathy Pryor.  Some evidence is that they grew bananas, states another reference.


When Great Britain sent their criminals into exile in Australia, they also found a people different from themselves.  They were the "Aboriginal Australians who are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Islands." As they tell us,  "Aboriginal and Torres Strait Islander peoples are the proud keepers of arguably the oldest continuous culture on the planet. Our heritage spans many different communities, each with its own unique mixture of cultures, customs and languages. Before the European invasion in 1788 there were more than 250 Indigenous nations, each with several clans.  Were they hunters or gatherers or farmers?  "Our people were great storytellers, passing on their cultures through songlines – an animist belief system expressed through songs, stories, paintings and dance. We were also expert hunters and gatherers and had sophisticated ways of taking care of the land.  The prevailing theory was that they had not yet gone through the farming stage.  

It seems that different people progressed according to how fast their particular DNA warranted the speed which was controlled by the dendrites, or vice-versa.  Necessity is said to be the mother of all invention, so it may be that necessity causes how fast our bodies react; as threat-free environment allows us to just live and enjoy.  

Our holy writings and legends all tell us that we came from Adam and Eve, one man and one woman, and this particular woman also came from Adam;  his rib, as a matter of fact, so she shared his DNA.  Yet, the sons of Adam haven't all developed at the same time nor at the same places other than knowing human life started in Africa. 

In fact, science is now thinking that before our stone age period, our paternal ancestor was something more like an Orangutan (tree man)  who was able to walk on two feet.  He lived in trees and finally came down, and he's the father of all of us;  going back extremely far, of course, and this came about after studying the remains of bones of the leg.  Orangutans are great apes native to the rainforests of Indonesia and Malaysia. They are now found only in parts of Borneo and Sumatra, but during the Pleistocene they ranged throughout Southeast Asia and South China. Classified in the genus Pongo, orangutans were originally considered to be one species.                                 

Intelligence comes from having the right genes and the use of our brains.  Having the right genes but being lazy about using your mind will get you nowhere.  A person who is constantly using his mind and learning, even as he or she ages, are using what they have, and need not worry about what genes they have inherited, except if their ancestors suffered from dementia a lot.  

Intelligence isn't everything, either.  One has had to have ambition and guts to get things accomplished, or the right friends in the right places and a lot of money for pay-offs.  

All this has to be dependent on our ecosystem; the water and nutrients in the soil that we eventually ingest.  This should have something to do with what kind of people we turn out to be. 


Animals are either getting smarter or always have been smart.

Wolfgang Kohler, the psychologist in 1920, observed that chimpanzees not only used tools to reach food, but that they could also make tools to reach food. 

Jane Goodall observed chimps in the 1960s doing so in the wild.  Until then, it was thought that only humans were able to make tools.  

We now know that Dolphins have a language, elephants mourn their dead, and even cats and dogs reason in their own cat and dog ways.  Dogs have been known to save their masters' lives in one way or another.  Bees communicate the way to the nearest flower through a kid of bee-dance.   

This all means that the modern day expectant mothers should be taking all the nutrients that modern medicine has to offer  in order to produce the best and healthiest child possible, and stay away from all the bad things like drugs, smoking, and alcohol. We don't want to be surpassed by the animals.  We are to stay on top.  

In the end, it's those genes and our environment that have made us who we are, and that environment helped to create all the dendrites that we had collected.  One seemed to affect the other.  We couldn't do much about the genes we inherited, but all through our lives, we are either prisoners or partners of our environment. Go and enjoy life.   

  


Resource:

DNA & Genealogy by Colleen Fitzpatrick & Andrew Yeiser

The New Standard Jewish Encyclopedia

https://www.intoxicatedonlife.com/all-the-twins-in-the-bible/

https://www.amnesty.org.au/eight-facts-about-indigenous-people-in-australia/?cn=trd&mc=click&pli=23501504&PluID=0&ord={timestamp}&gclid=CjwKCAjwv4SaBhBPEiwA9YzZvJ2lSoFf5ltre5GWcrxftKwacr4xDo5d1F0CNP9xlzgKC2V1mJbt_xoCJ0IQAvD_BwE

youtube on orangutan father of us all

https://www.britannica.com/topic/Pueblo-Indians

https://www.abc.net.au/radionational/programs/archived/bushtelegraph/rethinking-indigenous-australias-agricultural-past/5452454

https://www.sdbif.org/articles/dendrites_grow.pdf

https://en.wikipedia.org/wiki/Orangutan

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