>>12909157I'm in a similar position - I'm a math grad student who has really taken an interest mathematical biology. I haven't looked in depth at "gene coding", but I've studied a bit of populations dynamics, bioinformatics, and systems biology. Anyway, I think it should be a relatively simple transition to make. Recently, I've been reading up on linkage disequilibrium, SNPs, and the Hardy-Weinberg principal. It's all basically probability and information theory, and it's a really interesting topic right now, because there is a ton of research coming out about humans and human evolution and diversification. I'm sure you've heard about it, even in the popular press. I mean the stuff about neanderthals, denisovans, and archaic-modern human hybrids, and all the genealogical technology that has become popular in recent years.
Pic related isn't really related to genetic, but it's an image generated by a mathematical model of certain type of pattern formation that occur in biological systems. It's called a Lindenmeyer L-system, and they have several equivalent presentations, most commonly in terms of either recurrence relations (basically combinatorics), or rewrite systems (formal language theory). Since you're a physicist I'll mention that apparently Penrose tiles can be produced by such L-systems.