The Hidden Side of Evolution: Lessons from Butterflies

Not just genes...

Have you ever wondered how butterflies get their amazing colors and patterns?

 In Puerto Rico, bioinformatics researcher Angelo Ruggieri dug deep into the DNA of Heliconius butterflies to find the answer. And spoiler alert: it’s not just about the genes.

Not just DNA, but how DNA is controlled

For a long time, scientists thought that small mutations in genes were the main way species evolved new traits. But Angelo’s research shows something surprising:

1. The DNA code often stays the same.

2. What changes is how the DNA is used.

The power of regulatory elements

Inside every cell, special switches called regulatory elements control when, where, and how strongly genes turn on.

Even tiny tweaks in these switches can completely change how a butterfly’s wings look — without ever changing the actual genes.

And there’s more...

 Big chunks of DNA (called structural variants) can move, delete, or copy these switches, creating brand new possibilities nature can work with.

Rethinking Evolution Itself

Angelo’s work is part of a huge shift in how we think about evolution.

 It’s not just about "good" or "bad" mutations in genes.

 It’s about the hidden layers:

• DNA folding

• accessibility

• gene networks

• the silent switches that shape what an organism becomes.

Evolution doesn’t just write new words — it changes how the book is read.

This changes everything

By looking beyond genes, we’re learning how species adapt faster, evolve new traits, and even split into new species — sometimes with very little actual change in their DNA code

The future of evolutionary biology?

 It’s not just the genes — it’s the control panel behind the scenes.

Angelo’s full PhD, including all the bioinformatics and data behind this research, is available to read here