Flamingos, hydrangeas, leaves and eggs

Did you know that when flamingos are born, they are grey and their feathers are naturally white? Then… why do they display that pinkish colour? And hydrangeas, why do they show different colours? What do flamingos and hydrangeas have in common? And about the leaves of a tree…why do they change colour during the year? Did you know that eggshells present fluorescence? And finally, what do all these questions have in common?

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DNA: much more than the molecule of life (I)

Changing the subject from my last post, it’s time to talk about DNA and the recent discoveries related to it. Let’s start with the most simple question.

What is DNA?

Deoxyribonucleic acid (DNA) is the biomolecule that encodes the genetic information of cellular¬†organisms. It is composed of four molecules called nucleotides, which are represented with a letter: adenine (A), guanine (G), cytosine (C) and thymine (T). Continue reading “DNA: much more than the molecule of life (I)”