Thanks for clarifying. I find this topic quite interesting. I was thinking about the process to create recombinant DNA vs the PCR process and, as a thought experiment, wondered how biological numeracy might have played a role in the development of each. I feel like PCR is a great example of biological numeracy in action (as you pointed out), but I think part of the beauty of the recombinant DNA process is that it demonstrates our understanding of the physical attributes - size, structure, shape, etc. of biological molecules, perhaps even more so than numeracy.