List the 4 basic principles of genetics that mendel discovered in his experiments. briefly describe each princeiples.
Results showed T. rex was heavier than previous estimates, which ranged from about 4.5 tons to 6.5 tons, with the Field Museum's Sue skeleton weighing a heaping 9 tons (about 8,164 kilograms). [ Gallery: The World's Biggest Beasts ].
There was a time when large dinosaurs were thought to be long-lived animals, just like many reptiles today. However, studies on the growth-ring on their bones (yes, just like in trees) proved that T-Rex reached sexual maturity, and its adult size, at age 16-18.here was a time when large dinosaurs were thought to be long-lived animals, just like many reptiles today. However, studies on the growth-ring on their bones (yes, just like in trees) proved that T-Rex reached sexual maturity, and its adult size, at age 16-18.