11. In 2007, scientists broke open a fossil of a dinosaur bone and found
some preserved tissues. Analysis showed that some proteins in these
tissues are very similar to proteins found in modern chickens. The
conclusion that these dinosaurs are related to modern chickens is based
on

Molecular Similarities. They have similar details, compound proteins discussed.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%