Week Two: Evo devo thoughts

I was genuinely surprised to learn about the role of master control genes in the evolutionary process. I always thought (as many people do, I think) that the development of a new trait required a mutation in a gene. And, honestly, I could never figure out how enough mutations could occur to create such a vast array of living species (and of course I still don't understand that). But, it makes a little more sense to me that there are a few genes that control development which generate physical diversity even in the presence of similar genes. This is cool!

And, of course, this provides a different framework in which to consider the genetic similarity between humans and chimps. Even though our DNA is 98% the same, the master control genes in the 2% kick in to generate more physical differences between the species. Also, good to know!