07 fevereiro, 2013

Não há Jurassic Park para ninguém

O Jurassic Park é um filme especial para mim.
Vi-o quando era miúdo e imaginar a possibilidade de os dinossauros voltarem à Terra é um sonho para qualquer puto.

Pois bem, podemos tirar o dinossaurinho da chuva:

(…)the researchers calculated that DNA has a half-life of 521 years. That means that after 521 years, half of the bonds between nucleotides in the backbone of a sample would have broken; after another 521 years half of the remaining bonds would have gone; and so on.

The team predicts that even in a bone at an ideal preservation temperature of −5 ºC, effectively every bond would be destroyed after a maximum of 6.8 million years. The DNA would cease to be readable much earlier — perhaps after roughly 1.5 million years, when the remaining strands would be too short to give meaningful information.

[Link]

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