{"id":23430,"date":"2021-01-02T15:54:00","date_gmt":"2021-01-02T19:54:00","guid":{"rendered":"https:\/\/www.shortform.com\/blog\/?p=23430"},"modified":"2021-01-15T17:11:36","modified_gmt":"2021-01-15T21:11:36","slug":"gene-selection-theory","status":"publish","type":"post","link":"https:\/\/www.shortform.com\/blog\/gene-selection-theory\/","title":{"rendered":"Gene Selection Theory vs Natural Selection Theory"},"content":{"rendered":"\n

What is gene selection theory? How does it differ from natural selection<\/a> and is one a more realistic theory than the other?<\/p>\n\n\n\n

Natural selection is the well-known theory of evolution that says species with better adaptations for their environment will survive. In contrast, gene selection theory is the idea that behaviors and evolution select for certain genes rather than the species that carry those genes.<\/p>\n\n\n\n

Read more about gene selection theory, which was supported by Richard Dawkins in The Selfish Gene<\/em>.<\/p>\n\n\n\n\n\n\n\n

Natural Selection of Species Is Misleading<\/h2>\n\n\n\n

\u201cThe good of the species\u201d is a common misconception. It comes about because most of an animal\u2019s life is devoted to reproduction, and most of the selfless acts<\/a> an animal performs are for its offspring. Therefore, it seems like creatures act as they do in order to continue the species.<\/p>\n\n\n\n

However, the point is that creatures\u2019 ultimate goal can\u2019t <\/em>be the survival of the species as a whole, or such selfish behaviors wouldn\u2019t exist in nature. The truth is that nature is fiercely competitive, with members of the same population having to fight each other for limited resources\u2014and, therefore, for survival. This is called natural selection:<\/em> Organisms who are fit enough to survive and reproduce in their environments will be the ones to pass on their genes to the next generation. <\/p>\n\n\n\n

Gene Selection<\/strong> Theory<\/h3>\n\n\n\n

The other explanation for altruistic behavior is the gene selection theory<\/em>. The key to understanding the gene selection theory is recognizing that close relatives, by definition, share many of the same genes.<\/strong> For example, in a typical mammal that reproduces sexually, an individual\u2019s offspring and siblings will both have 50% of its genes. However, there\u2019s no way for a gene to actively recognize itself in another organism, so it has to play the odds. If another organism carries 50% of the same genes, then there\u2019s a 50% chance that it carries a copy of the gene in question.<\/p>\n\n\n\n

Therefore, from the perspective of a selfish gene, siblings and offspring should be considered 50% as valuable as the organism that gene happens to be in. So, to give an extreme example, if an organism could save more than two of its siblings or children by sacrificing its own life, selfish gene theory<\/a> dictates that it should do so. Genes don\u2019t need one particular organism to survive, as long as organisms likely to be carrying them are able to keep reproducing. <\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

What is gene selection theory? How does it differ from natural selection and is one a more realistic theory than the other? Natural selection is the well-known theory of evolution that says species with better adaptations for their environment will survive. In contrast, gene selection theory is the idea that behaviors and evolution select for certain genes rather than the species that carry those genes. Read more about gene selection theory, which was supported by Richard Dawkins in The Selfish Gene.<\/p>\n","protected":false},"author":6,"featured_media":11749,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[21,160],"tags":[187],"class_list":["post-23430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-philosophy","category-science","tag-the-selfish-gene","","tg-column-two"],"yoast_head":"\nGene Selection Theory vs Natural Selection Theory - Shortform Books<\/title>\n<meta name=\"description\" content=\"What is gene selection theory and how does it differ from natural selection theory? 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