Corrected entry: When the T-Rex moves to Dr. Grant and the boy they hold still because it can't see things that don't move. Unfortunately though, T-Rex's have a highly developed sense of smell and would certainly have known they were there.
Noman
17th Jul 2004
Jurassic Park (1993)
15th Jul 2004
Jurassic Park (1993)
Corrected entry: There's a problem with the "faulty lysine gene" idea. If the idea is to insert a faulty gene to prevent the dinosaurs metabalizing lysine, then feeding them dietary supplements won't help. They won't be able to metabolize the extra lysine, so what's the point of them eating it? If the idea is to stop them manufacturing lysine then they are on a hiding to nothing anyway, as lysine is not "manufactured" in the body and is obtained exclusively from dietary sources. Either way, those dinosaurs are in trouble from the getgo.
Correction: The faulty lysine gene wasn't inserted to prevent the dinosaurs from metabolising lysine: It makes them lysine dependent. Word for word from the book (since it explains it better): "we don't want them to survive in the wild. So I've made them lysine dependent. I inserted a gene that makes a single faulty enzyme in protein metabolism. As a result, the animals cannot manufacture the amino acid lysine. They must ingest it from the outside. Unless they get an extraneous source of lysine - supplied by us, in tablet form - they'll go into a coma within 12 hours and expire."
26th Jun 2007
Jurassic Park (1993)
Corrected entry: Early in the movie, in the scene where the goat is presented to try and attract the T-Rex, Lex claims to be a vegetarian. Yet later in the movie, Lex is eating jelly, which contains gelatin, an animal derived product, which is unsuitable for vegetarians and vegans.
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Correction: Considering the fact T-Rex's have been extinct for 65 million years, its quite difficult to tell what their sense of smell was like. Also, Grant says quite clearly in the film that sight was the Rex's most powerful sense and if you stayed still, it confuses him.
SexyIrishLeprechaun
There is actually evidence that T-Rex had visual clarity 13 times better than a human, and could see objects up to 6 kilometres away. So, T-Rex would have been able to see Dr. Grant and the boy regardless of whether they moved or not.
If a T-Rex is unable to see something when something is standing still, it's not its most powerful sense. Smell makes more sense, but not provable.
lionhead
Evidence indicates that the T-rex had an excellent sense of smell. Citation: Hughes GM, Finarelli JA. 2019 Olfactory receptor repertoire size in dinosaurs.Proc. R. Soc. B286: 20190909.http://dx.doi.org/10.1098/rspb.2019.0909.
Noman ★