BlogHide Resteemscallimico (25)in science • 7 years agoNew series: Pain in animalsJust last month, Switzerland became the first country in the world to ban the practice of boiling lobsters alive . But do lobsters even feel pain? In my upcoming posts, I will talk about pain in…callimico (25)in math • 7 years agoAlternative approach to subtractionsConsider the following calculation: In elementary school, I was taught to solve this kind of problem by borrowing tens to fill in the missing ones, hundreds to fill in missing tens and so…callimico (25)in science • 7 years agoHow to draw an evolutionary tree II: maximum parsimonyIn my previous post , I described how to use the algorithm UPGMA to construct an evolutionary tree from a distance matrix. It was fast and straightforward, but we had to make the assumption that…callimico (25)in science • 7 years agoHow to draw an evolutionary tree: UPGMAIn my first post , I explained how to read a phylogenetic tree, a tree depicting the relationship between different taxa, i.e. groups of organisms. In my second post , I explained what data…callimico (25)in science • 7 years agoHow to compare two DNA sequences by hand - the Needleman-Wunsch algorithmFirst of all, no sane person working in bioinformatics would spend time comparing DNA sequences by hand with all the fast digital tools available ( here's one ). Still, any bioinformatician would…callimico (25)in science • 7 years agoWhy we trust in DNA to tell us how organisms are relatedAll organisms living on the planet today are thought to originate from a single ancestral organism. It’s an extraordinary claim, but it’s backed up by the extraordinary fact that all organisms are…callimico (25)in science • 7 years agoWhy you're more closely related to a salmon than a salmon is to a shark - understanding phylogeniesHi there! This is my first Steemit post so I would like to introduce myself briefly. If you can’t wait to read more about your relationship with fish, just skip the next paragraph. I come from…
