Jurassic Park is One Step Closer

More or less. As first suggested in 2011 by paleontologist Jack Horner (who, ironically, worked on helping keep the Jurassic Park movies and Jurassic World movies [more or less] accurate), the genes for one's ancestors can theoretically still be in an individual's genome, simply lying dormant. The only reason that they aren't physically present is that they are not being expressed. Using this logic, he has since been attempting to "unlock", or express, ancient dinosaurian genes in a chicken through embryonic manipulation, and selective breeding. And, as recently as May 2015, he and his team have successfully manipulated the genes of a chicken embryo to form pseudo-teeth.

Left: Normal chicken embryo beak

Right: Mutated chicken with "tooth nubs"

So why should Jack Horner be using a chicken? Because birds are direct descendants of dinosaurs, making them the best candidate for the genes he hopes to find and activate, and chickens are simply "the easiest birds to work with". The project will officially be completed when Horner and his team have successfully hatched a fully grown, healthy "chickenosaurus" (as the team lovingly calls this hypothetical animal) with claws, teeth, and a longer tail and arms. Horner claims that his team are "from a quantitative point of view, 50% of the way there".

However, if you really can't wait for a dinosaur park, then look no further than the bird section of your local zoo. Since birds are descendants of dinosaurs, they share a clade with them and are considered to be extant dinosaurs.
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