El genoma humano, esconde un incómodo misterio.
Lean, vean y opinen:
After sixteen years and the hard work of 2,800 scientists around the world, there are some answers and surprises.
First, if you think of the human body as a book, then all of the pages and text together are the genome. The word was coined from genes and chromosomes. The DNA in every cell contains the whole book about how to make a human body.
The “words” in each genome “book” are the genes. The Human Genome Project expected to find at least 100,000 genes were necessary to create a human body. But one of the big surprises is the number of genes is only about 22,000, less than several other Earth creatures, especially plants – which have as many as 40,000 genes.
The main reason for the smaller number of genes than expected is that human genes are capable of multi-tasking the production of proteins. You might say the human genome book has a more advanced text, but it still takes 3 billion letters to write out those 22,000 words.
Now we come to the current main problem in the Human Genome Project: what is the punctuation in a string of 3 billion letters? Scientists have learned some sentence fragments, but do not know full sentences. That could take at least another decade to figure out how all those letters and words make our bodies work.
Another big puzzle is that inside some of the 22,000 genome “words” are strings of repeating “letters.” Imagine seeing a hundred letter g’s together and not having a clue why they are there. Scientists call long strings of repeating letters “non-coding sequences,” or “junk DNA.” Strangely, there is a lot of junk DNA in the human DNA molecule.”
John McPherson, Ph.D., Baylor College of Medicine.
En palabras de Chang:
A group of researchers working at the Human Genome Project indicate that they made an astonishing scientific discovery: They believe so-called 97% non-coding sequences in human DNA is no less than genetic code of extraterrestrial life forms.
The non-coding sequences are common to all living organisms on Earth, from moulds to fish to humans. In human DNA, they constitute larger part of the total genome, says Prof. Sam Chang, the group leader. Non-coding sequences, originally known as “junk DNA“, were discovered years ago, and their function remained a mystery. The overwhelming majority of Human DNA is “Off-world” in origin. The apparent “extraterrestrial junk genes” merely “enjoy the ride” with hard working active genes, passed from generation to generation.
Directed Panspermia,” Icarus, International Journal of Solar System Studies, Vol. 19, No. 3, July 1973 by F. H.C. Crick and L. E. Orgel, © 1973 Academic Press, Inc
Nat’l. Institutes of Health: http://www.genome.gov/10001772
Cortesía de Javier (Biólogo) para Cienciakanosa.wordpress.com