{"id":161585,"date":"2025-04-09T20:13:36","date_gmt":"2025-04-09T14:43:36","guid":{"rendered":"https:\/\/pwonlyias.com\/stage\/?post_type=current-affairs&#038;p=161585"},"modified":"2025-04-09T20:26:08","modified_gmt":"2025-04-09T14:56:08","slug":"de-extinction-of-the-dire-wolf","status":"publish","type":"current-affairs","link":"https:\/\/pwonlyias.com\/stage\/current-affairs\/de-extinction-of-the-dire-wolf","title":{"rendered":"De-Extinction of the Dire Wolf"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Recently, Colossal Biosciences, U.S. based company, announced the<\/span><b> birth of three genetically modified wolf pups<\/b><span style=\"font-weight: 400;\">, claiming them as<\/span><b> &#8220;functional copies&#8221; <\/b><span style=\"font-weight: 400;\">of the <\/span><b>extinct dire wolf<\/b><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-161572 alignright\" src=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2025\/04\/93-67f682a5d0fcc.webp\" alt=\"Dire Wolf\" width=\"321\" height=\"281\" srcset=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2025\/04\/93-67f682a5d0fcc.webp 578w, https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2025\/04\/93-67f682a5d0fcc-300x263.webp 300w\" sizes=\"(max-width: 321px) 100vw, 321px\" \/><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The pups, named<\/span><b> Romulus, Remus, and Khaleesi<\/b><span style=\"font-weight: 400;\">, were born through<\/span><b> surrogacy by dog mothers.<\/b><\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>About the Dire Wolf<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The <\/span><b>dire wolf (Aenocyon dirus) <\/b><span style=\"font-weight: 400;\">was a large, powerful canine that lived in <\/span><b>North America and went extinct approximately 13,000 years ago.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It was<\/span><b> larger than today&#8217;s grey wolves<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">They preyed on<\/span><b> large mammals like horses, bison, and possibly mammoths.<\/b><\/li>\n<\/ul>\n<div class=\"vc_table_green\">\n<table style=\"width: 99.7983%;\">\n<tbody>\n<tr>\n<th style=\"width: 100%; border-style: solid; border-color: #000000; background-color: rgba(184, 165, 217, 0.53); text-align: left; vertical-align: middle;\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">De-extinction refers to the <\/span><b>process of reviving extinct species using advanced genetic technologies<\/b><span style=\"font-weight: 400;\">. It aims to restore lost biodiversity and repair ecosystems.<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\"><b>Approaches to De-extinction:<\/b><\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"color: #000000;\"><b>Cloning: <\/b><span style=\"font-weight: 400;\">This method uses preserved cells of extinct animals to create genetically identical individuals, as seen in efforts to clone the Pyrenean ibex.<\/span><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"color: #000000;\"><b>Selective Breeding: <\/b><span style=\"font-weight: 400;\">By breeding living species that have similar traits to extinct ones, scientists aim to recreate animals resembling the original species, such as breeding back the aurochs.<\/span><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"color: #000000;\"><b>Genetic Engineering:<\/b><span style=\"font-weight: 400;\">\u00a0 Scientists edit the DNA of living relatives to include genes from extinct species, as in attempts to revive the woolly mammoth using Asian elephant DNA.<\/span><\/span><\/li>\n<\/ul>\n<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div><b><\/b><\/p>\n<h2><span style=\"font-size: 18pt;\"><b>Technologies Used in the De-Extinction Process<\/b><\/span><\/h2>\n<ul>\n<li><b>Ancient DNA Recovery: <\/b><span style=\"font-weight: 400;\">Scientists accessed dire wolf specimens,<\/span><b> including a 13,000-year-old tooth and a 72,000-year-old skull.<\/b>\n<ul>\n<li><span style=\"font-weight: 400;\">DNA was extracted from the <\/span><b>petrous (inner ear) bone<\/b><span style=\"font-weight: 400;\">, known for preserving genetic material well.<\/span><\/li>\n<\/ul>\n<\/li>\n<li><b>Genome Sequencing:\u00a0<\/b>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Researchers reconstructed two complete dire wolf genomes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">They compared these to other canids like grey wolves, coyotes, jackals, and dholes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">It was confirmed that <\/span><b>grey wolves share 99.5% of their DNA with dire wolves.<\/b><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gene Editing: <\/b><span style=\"font-weight: 400;\">Scientists introduced <\/span><b>20 targeted genetic edits to the grey wolf genome<\/b><span style=\"font-weight: 400;\">.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>14 genes were specifically modified<\/b><span style=\"font-weight: 400;\"> to reproduce <\/span><b>key dire wolf trait<\/b><span style=\"font-weight: 400;\">s such as:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">Light-colored coat<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">Coat length and pattern<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">Increased body size<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">Stronger musculature<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Embryo Implantation: <\/b><span style=\"font-weight: 400;\">Fertilized, gene-edited eggs were<\/span><b> implanted into surrogate dog mothers <\/b><span style=\"font-weight: 400;\">which successfully led to the birth of three genetically modified wolf pups.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>Are They Truly Dire Wolves?<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Despite genetic editing, <\/span><b>the new wolves are not identical to the original dire wolves.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">According to a<\/span><b> 2021 Nature study, dire wolves and grey wolves diverged around 6 million years <\/b><span style=\"font-weight: 400;\">ago, making them distant relatives despite appearances.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Colossal is applying the<\/span><b> morphological species concept, meaning that if an animal looks like a dire wolf, it can be classified as one.<\/b>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">However,<\/span><b> millions of base-pair differences still exist between the two species.<\/b><b><br \/>\n<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>Significance of the De-Extinction<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Scientific Achievement:<\/b><span style=\"font-weight: 400;\"> This marks the<\/span><b> first reported attempt<\/b><span style=\"font-weight: 400;\"> to bring back an extinct animal species through genome engineering.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ecological Impact:<\/b><span style=\"font-weight: 400;\"> If successful, dire wolves could play a role in restoring lost ecological functions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Technological Advancement: <\/b><span style=\"font-weight: 400;\">Showcases advances in <\/span><b>genome sequencing, gene editing, and ancient DNA recovery.<\/b><b><br \/>\n<\/b><\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>Current Limitations<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The pups<\/span><b> do not possess natural social behaviors,<\/b><span style=\"font-weight: 400;\"> as they were raised without parents or packs.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are<\/span><b> not allowed to breed,<\/b><span style=\"font-weight: 400;\"> and Colossal plans to create only a few more individuals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thus, a <\/span><b>self-sustaining dire wolf population has not yet been achieved.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It also raises debates about <\/span><b>species classification, animal welfare, and the risks of reintroducing engineered species.<\/b><\/li>\n<\/ul>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.6375%;\">\n<tbody>\n<tr>\n<td style=\"width: 111.19%; text-align: center;\" colspan=\"2\"><span style=\"font-size: 18pt;\"><b>Also Read<\/b><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 49.797%; text-align: center;\"><a href=\"https:\/\/pwonlyias.com\/stage\/editorial-analysis\/\" target=\"_blank\" 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three genetically modified wolf pups, claiming them as &#8220;functional copies&#8221; of the extinct dire wolf.<\/p>\n","protected":false},"author":11,"featured_media":161574,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"tags":[],"paper-wise":[2089],"subject":[2092],"acf":[],"_links":{"self":[{"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/current-affairs\/161585"}],"collection":[{"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/current-affairs"}],"about":[{"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/types\/current-affairs"}],"author":[{"embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/comments?post=161585"}],"version-history":[{"count":3,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/current-affairs\/161585\/revisions"}],"predecessor-version":[{"id":161596,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/current-affairs\/161585\/revisions\/161596"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/media\/161574"}],"wp:attachment":[{"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/media?parent=161585"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/tags?post=161585"},{"taxonomy":"paper-wise","embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/paper-wise?post=161585"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/pwonlyias.com\/stage\/wp-json\/wp\/v2\/subject?post=161585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}