Many diseases are as simple as your eyes being brown vs blue - you simply have or lack particular proteins.
I wish it were that simple. :(
Eye color, for example, is influenced by a combination of multiple genes. There’s no straightforward eye color gene.
Likewise, it’s especially true for diseases when something like “stomach cancer” is actually a dozen different diseases where each is influenced by dozens of different genes that share symptoms. Combinatorial explosion is a real problem.
I wish it were that simple. :(
Eye color, for example, is influenced by a combination of multiple genes. There’s no straightforward eye color gene. Likewise, it’s especially true for diseases when something like “stomach cancer” is actually a dozen different diseases where each is influenced by dozens of different genes that share symptoms. Combinatorial explosion is a real problem.