callimico
@callimico
25
Danish biology student with a passion for animals, language learning and musical composition among other things
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2018-03-13 10:40
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callimico
science
8y
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New series: Pain in animals
New series: Pain in animals
Just 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 animals,
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callimico
math
8y
Alternative approach to subtractions
Alternative approach to subtractions
Consider 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 on: This method
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callimico
science
8y
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How to draw an evolutionary tree II: maximum parsimony
How to draw an evolutionary tree II: maximum parsimony
In 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 evolution
callimico
science
9y
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How to draw an evolutionary tree: UPGMA
How to draw an evolutionary tree: UPGMA
In 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 forms the basis
callimico
science
9y
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How to compare two DNA sequences by hand - the Needleman-Wunsch algorithm
How to compare two DNA sequences by hand - the Needleman-Wunsch algorithm
First 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 do well
callimico
science
9y
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Why we trust in DNA to tell us how organisms are related
Why we trust in DNA to tell us how organisms are related
All 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
science
9y
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Why you're more closely related to a salmon than a salmon is to a shark - understanding phylogenies
Why you're more closely related to a salmon than a salmon is to a shark - understanding phylogenies
Hi 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 Denmark.