Nucleic acids serve as genetic coding since some examples are DNA and RNA
In fiction, you would like to give variety to your word choices. In formal business or academic writing, You want to prevent ambiguity and so may use the same word again and again to make your meaning clear. For example "contract" might be used repeatedly rather than along with some synonyms for it.
When I was alive I was keeping up with my oldest sister who used to threaten me and my other sister lol... during that time there was also politics going around and fires and plane crashes. Ofc I was only born in 2008 so..
I searched a bit online and my answer is mannequins.