Facts of Evolution – DNA, polypeptides and polysaccharides
Evolution takes far longer than a lifetime, and it is not something that we give thought to for our own benefit. The evolution of the human, over millions of years can be seen in the development of the human embryo. We have genetically determined functions, but all life functions require present-time appropriate fuel to properly function.
All species on earth share the same basic cellular components that supports all life processes. These are polynucleotides, known as DNA and RNA; polypeptides, or proteins; and polysaccharides, starches and glucose. All life uses the same 20 amino acids as well, even though there are nearly 400 that could be used.
Thanks to the creators of this video for this educational look at the common composition of life.
Learn more about the often controversial subject of Evolution.
6 Responses to “Facts of Evolution – DNA, polypeptides and polysaccharides”
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this video is magnific
Excellent Video. thanks for posting
5 Stars!
Love these videos!
I’ve read a paper on guppies, and it was calling a change in color pattern evolution when that is a change in phenotype. I thought evolution would be a change in genotype?
Also, when it says there are many possibilities for amino acids to form DNA, shouldn’t we consider this didn’t happen in nature not because we inherited that blueprint but because that blueprint was the one that worked best? What would stop life from using “alternative” blueprints? Do we see that anywhere?
Evolution is a process. One possible path is through multiple phenotype changes.
Your question about different blueprints is right on. Natural selection is the process that chooses among the different blueprints that have emerged in the course of life’s history. But after that selection has been made, future descendants inherit the one that works the best.