Compared to today’s corn plant, teosinte:

Evidence from archaeological and genetic studies suggests that maize was bred and cultivated by early inhabitants of Mexico as early as ten thousand years ago. The early Mesoamericans managed to develop corn from its grassy ancestor by selective breeding. Maize was bred from a wild grain called teosinte.

mark brainliest   :)

if you have ever  had shrimp and snow peas from a Chinese takeout place, that little corn on the cob, THAT was teosinte and THAT was the 'original' corn. It was small and wasn't anything like today's corn. they somehow modified it to make it bigger. This may not be the best answer but I learned this a few weeks ago and it Shocked me. :D