Hello there! I decided I wanted to share my knowledge with others on how to easily get Genetic Code bonuses for others that haven't really unlocked all of them just yet. What you have to do is:
Use the Virus plague. Think of the Virus as your perfect tag team for this. Make sure your game is on 4x speed.
What you do is focus up on Transmissions, certain Symptoms, and Abilities.
This is suited for Normal or Casual.
So, the best place to start is China. You're gonna want to get these Transmissions to help you off with your Virus buddy in this order --
Rodent 1
Bird 1
Water 1
After that, you want to build for Drug Resistance 1 and Cold Resistance 1. Continuing forward after that, save up until you can grab these in this order:
Birds 2
Livestock 1
Insect 1
Water 2
The 2nd water upgrade is to help you get onto those pesky islands that are normally hard to get onto. By the time you roll around with these upgrades, the world should already be battling you. If your Virus buddy hasn't upgraded Pneumonia, Sweating, or Hyper Sensitivity, get that on lock. Once every country has been infected, smack down that clicker onto your Virus buddy's instability and unleash his terror!
If your Virus buddy is having trouble in Canada, be petty (since you should have a helluvalot of DNA points) and put in Cold Resistance 2 and Drug Resistance 2.
After that, sit back and watch as you both destroy the world.