DNA. EMILY ABRAMSON ELIAS ARMAO. Who Discovered DNA?.
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EMILY ABRAMSON ELIAS ARMAO
It is debated as to who the actual credit for discovering DNA goes to. The fundamental discovery of DNA usually goes to James Watson and Francis Crick who were discovered the double helix structure in 1953. However, many also give some of the credit to Rosalind Franklin.
To the right is James Watson and Francis Crick, posing for a picture, along with Rosalind.
What the Heck is DNA?
What on Earth does all of that mean?
DNA is embedded in every cell of every living being. It carries the genetic codes of every different being, and makes every person unique.
This is an actual, microscopic picture of DNA. This is smaller than a single cell, unfathomably small to a human’s perception.
DNA looks almost like a twisted ladder, spiraling forever, it seems like. However, there is much more to that ladder than meets the microscopic eye.
In each rung of this tiny ladder, there are codes. These codes are genetic “files” for the body that tells us what genes we have, like brown eyes, blonde hair, etc…
There are thousands of strands of DNA in every cell of your body, and there are millions, if not trillions of cells in a human. That’s a lot of DNA.
This slide helps show what genetic codes are. Adenine, Thymine, Guanine, and Cytosine all show the different ways that DNA can be coded. Four simple codes are what make up the entirety of human civilization, and are what make each and every one of us unique. Imagine that.
The Sugar Phosphate Backbone (or the banister of the spiral staircase), is how the DNA stays organized. Without this spine, the DNA strands would be unsupported and would simply fall apart.
What exactly does DNA do?
DNA in real life!
Scientists have discovered that DNA can rupture and break, and this is sometimes why babies have birth defects. This particular picture is an artist’s rendering of someone’s DNA with Huntington’s Disease. However, Scientists have also recently discovered that DNA, not unlike the cells of the human body themselves, can repair itself.
Healthy, undamaged DNA
DNA damaged by UV Radiation
DNA can be damaged by many things, such as extended drug use, sun exposure without protection, and mistreating your body for long periods of time in general.
One of the main health concerns out there is UV ray exposure. Such exposure can break or fracture the tiny strands of DNA inside of your skin cells.
However, if your DNA is broken, it is not the end! Scientists have recently discovered “repair shops” in the human body where cells actually fix the DNA cells. Amazing!
Emily and I hope you enjoyed our PowerPoint and learned stuff about DNA!