Why does having a extra or one less chromosome have such an impact on the body
In: 4
DNA is like computer code. If a part of the codes get missing you can’t perform the functions that were dependant on the lost code. Which causes the program (organism) to fail.
Same with an extra part of the code. You might ask for value x from a but you get value x from b. Which might cause the rest of the program to fail. But for some rare cases like down syndrome it is not that big of disaster that you fail completely.
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