Jurassic Park

     There is several scientific ideas throughout Jurassic Park, the main one being genetic engineering and one very key idea to the plot that blood can be extracted out of mosquitos that are millions of years old that were found in fossilized sap, known as amber. All need be done is to find some DNA sequence it and easy as that we have a dinosaur!...
      But lets think. Is this actually plausible with today's technology? The answer is no and lets start off with the basic. DNA is held together by weak hydrogen bonds between adenine to thymine and guanine to cytosine. They come apart pretty easily making replication of DNA pretty easy so an organism can make proteins within its cell or just to replicate and make a whole new cell. This some property allows strands to come apart and degrade very readily. There has been reports of genes being recovered from an organism over twenty-million years old but it was just one gene. There is thousands and thousands of genes found in organisms and not every gene has a function. Lot of genes are just random junk that doesn't get used. How would scientist know if they got all the genes that a prehistoric animal needs to survive. Even if all the proper genes got put together inside an egg how would it be able to develop without the mothers genes to provide key proteins and enzymes that help in early development. To fill in the gaps that would be there in the movie Jurassic Park frog DNA was used, which is quite bewildering to me since frogs aren't that close to dinosaurs in evolutionary terms.
   Organisms are more than the sum of the parts. Scientist can breakdown complex organic systems to its basic building blocks and understand how they work for the most part, but putting these parts back together in the perfect configuration that natural selection did over millions of years is not the same thing. So in conclusion, DNA is fragile and doesn't stand the test of time, key proteins and ezymes would be missing from egg, frogs are hardly related to dinosaurs and complex organic structures are more than the sum of its parts. This is my belief of why Jurassic Park though entertaining is unrealistic and could never be practiced.