Not on yellow, only on red and blue versions. And unfortunately I forgot how to get missingo on those, been years.
Unfortunately, the Missing No./Item Duplication glitch has been removed from Yellow, as stated here: Through the development of Pokémon Yellow, which occurred in the two years following the release of Pokémon Red and Green in Japan, the Old man glitch was disabled by blanking the data for wild Pokémon before overwriting it, and reprogramming shore tiles to act as water tiles, thus removing this glitch too.
True... I just wanted the masterballs so I didn't have to go to too much effort catching things. Haha.