<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>https://ecency.com</link><image><url>https://ecency.com/logo512.png</url><title>RSS Feed</title><link>https://ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Wed, 16 Sep 2026 12:05:21 GMT</lastBuildDate><atom:link href="https://ecency.com/@callimico/rss" rel="self" type="application/rss+xml"/><item><title><![CDATA[New series: Pain in animals]]></title><description><![CDATA[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,]]></description><link>https://ecency.com/@callimico/new-series-pain-in-animals</link><guid isPermaLink="true">https://ecency.com/@callimico/new-series-pain-in-animals</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Thu, 22 Mar 2018 16:43:48 GMT</pubDate><enclosure url="https://i.ecency.com/p/2gsjgna1uruvUuS7ndh9YqVwYGPLVszbFLwwpAYXa4gjSMcnStcURfoDJmjWKuB9UzzJ32M8T2z7hAK9ntQCphk1JvMwCPSHxAov9hB3eur6KM7fJ6?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Alternative approach to subtractions]]></title><description><![CDATA[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]]></description><link>https://ecency.com/@callimico/alternative-approach-to-subtractions</link><guid isPermaLink="true">https://ecency.com/@callimico/alternative-approach-to-subtractions</guid><category><![CDATA[math]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Tue, 20 Mar 2018 17:09:21 GMT</pubDate><enclosure url="https://i.ecency.com/p/2gsjgna1uruvUuS7ndh9YqVwYGPLVszbFLwwpAYXYc4FGKLtbnF2Bu8ctsy4MxNdQ3JmYfRrDbibwDknFVgDrhd47C14Qv2mrQVEucXLV99Q77NZMx?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[How to draw an evolutionary tree II: maximum parsimony]]></title><description><![CDATA[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]]></description><link>https://ecency.com/@callimico/how-to-draw-an-evolutionary-tree-ii-maximum-parsimony</link><guid isPermaLink="true">https://ecency.com/@callimico/how-to-draw-an-evolutionary-tree-ii-maximum-parsimony</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Sat, 17 Mar 2018 10:31:27 GMT</pubDate><enclosure url="https://i.ecency.com/p/HNWT6DgoBc18GVREvvsnAjfLwLF5qHHFduNHKinpxyB3hST8wjmwPFgt14EDA2XWYmV2jmpmpENReVCeRVYwmTaXR3yJ95t7pzfay3zahaNLEEsSNHfqZCqbcUn?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[How to draw an evolutionary tree: UPGMA]]></title><description><![CDATA[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]]></description><link>https://ecency.com/@callimico/how-to-draw-an-evolutionary-tree-upgma</link><guid isPermaLink="true">https://ecency.com/@callimico/how-to-draw-an-evolutionary-tree-upgma</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Fri, 16 Mar 2018 07:14:18 GMT</pubDate><enclosure url="https://i.ecency.com/p/2gsjgna1uruvUuS7ndh9YqVwYGPLVszbFLwwpAYXZtmW8V8qEqxYfCdG4EyUsMENua9xc4waLbqUG5iJKvREXgkWTrSaWBMPA1W254AmCbQYK8k6vA?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[How to compare two DNA sequences by hand - the Needleman-Wunsch algorithm]]></title><description><![CDATA[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]]></description><link>https://ecency.com/@callimico/how-to-compare-two-dna-sequences-by-hand-the-needleman-wunsch-algorithm</link><guid isPermaLink="true">https://ecency.com/@callimico/how-to-compare-two-dna-sequences-by-hand-the-needleman-wunsch-algorithm</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Thu, 15 Mar 2018 06:47:36 GMT</pubDate><enclosure url="https://i.ecency.com/p/Zskj9C56UondJxcjVaienfhVaNb7LJVWG6e787gZu53NCoGD9p7dqS4KukZxptA4gPrW3CiHJWKnYqVddmiE3qexqGCwTud1up1gFVrtWiRZpRZV1vMk?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Why we trust in DNA to tell us how organisms are related]]></title><description><![CDATA[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]]></description><link>https://ecency.com/@callimico/why-we-trust-in-dna-to-tell-us-how-organisms-are-related</link><guid isPermaLink="true">https://ecency.com/@callimico/why-we-trust-in-dna-to-tell-us-how-organisms-are-related</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Wed, 14 Mar 2018 10:59:27 GMT</pubDate><enclosure url="https://i.ecency.com/p/qjrE4yyfw5pQYiuVvgYiUBP16WHGGN7UNn1BCdGdZHVSjcicas77ptJ3mVrtF8Ag3HurPeuvHWjXqvkHELw51JxB5PdJ8otfE7q9aFMNNspRLyL29SzLr6qU?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Why you're more closely related to a salmon than a salmon is to a shark - understanding phylogenies]]></title><description><![CDATA[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.]]></description><link>https://ecency.com/@callimico/why-you-re-more-closely-related-to-a-salmon-than-a-salmon-is-to-a-shark-understanding-evolutionary-phylogenies</link><guid isPermaLink="true">https://ecency.com/@callimico/why-you-re-more-closely-related-to-a-salmon-than-a-salmon-is-to-a-shark-understanding-evolutionary-phylogenies</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[callimico]]></dc:creator><pubDate>Tue, 13 Mar 2018 16:38:15 GMT</pubDate><enclosure url="https://i.ecency.com/p/Zskj9C56UondJxcjVaienfhVaNb7LJVWG6e787ga5zaHSYrU4vkPGwi61SyWRjDhDdDoRouVo6JbbkQuj7EJLWkcrKRqJhfmZF2wPsrSza9qKECRJDBk?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>