50/500 rule | biology and population analysis (2024)

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Interior wall of the temple to Osiris at Abydos, Egypt.","credit":"© Amanda Lewis/Dreamstime.com","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/52/196952-131-0665E4EE/Egyptians-hieroglyphics-carvings.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"Philosophy & Religion","url":"/list/browse/Philosophy-Religion"}],"lastItemTitle":"Philosophy & Religion"},"superCategory":{"id":5,"title":"History & Society","url":"History-Society","description":"Explore history and society; accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","keywords":"accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","classId":"HISTORY","sortOrder":1},"hashtags":["myth","mythology","religion","ancient Egypt","Egypt","Egyptian mythology","gods","goddesses"],"hashtagsString":"myth, mythology, religion, ancient Egypt, Egypt, Egyptian mythology, gods, goddesses","displayDate":[2017,10,27],"urlTitle":"11-egyptian-gods-and-goddesses","featureSubType":"REGULAR","categories":[{"id":7000,"title":"Philosophy & Religion","url":"Philosophy-Religion","description":"Humans have long pondered not only how we came to be but also why we came to be. The earliest Greek philosophers focused their attention upon the origin and nature of the physical world; later philosophers have theorized about the nature of knowledge, truth, good and evil, love, friendship, and much more. Philosophy involves a methodical assessment of any and all aspects of human existence and experience. The realms of philosophy and religion have sometimes intersected in conducting such inquiries as these. As with philosophy, the study of religion underscores how humankind has long speculated about its origins. The possibility of a higher being (or beings) to which livings things owe their existence has long captived human thought. Many religions also offer their own views on the nature of good and evil, and they may prescribe guidelines and judgment on different kinds of human behavior.","image":{"id":0,"url":"/95/180595-050-EDF2CA3A.jpg","altText":"Philosophy & Religion","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/95/180595-050-EDF2CA3A.jpg"}},{"id":6000,"title":"World History","url":"World-History","description":"Does history really repeat itself, or can we learn from the mistakes of those who came before us? History provides a chronological, statistical, and cultural record of the events, people, and movements that have made an impact on humankind and the world at large throughout the ages.","image":{"id":0,"url":"/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg","altText":"World History","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg"}},null],"mainCategory":{"id":7000,"title":"Philosophy & Religion","url":"Philosophy-Religion","description":"Humans have long pondered not only how we came to be but also why we came to be. The earliest Greek philosophers focused their attention upon the origin and nature of the physical world; later philosophers have theorized about the nature of knowledge, truth, good and evil, love, friendship, and much more. Philosophy involves a methodical assessment of any and all aspects of human existence and experience. The realms of philosophy and religion have sometimes intersected in conducting such inquiries as these. As with philosophy, the study of religion underscores how humankind has long speculated about its origins. The possibility of a higher being (or beings) to which livings things owe their existence has long captived human thought. Many religions also offer their own views on the nature of good and evil, and they may prescribe guidelines and judgment on different kinds of human behavior.","image":{"id":0,"url":"/95/180595-050-EDF2CA3A.jpg","altText":"Philosophy & Religion","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/95/180595-050-EDF2CA3A.jpg"}},"typeDisplayName":"List"}]},"byline":null,"citationInfo":null,"websites":null,"freeTopicReason":"TOPIC_IS_INDEX_PAGE","articleSchemaMarkup":{"keywords":"50/500 rule","wordcount":0,"url":"https://www.britannica.com/science/50-500-rule","description":"Other articles where 50/500 rule is discussed: minimum viable population: Estimating MVP: They created the “50/500” rule, which suggested that a minimum population size of 50 was necessary to combat inbreeding and a minimum of 500 individuals was needed to reduce genetic drift. Management agencies tended to use the 50/500 rule under the assumption that it was applicable to species…","publisher":{"name":"Encyclopedia Britannica","@type":"Organization","logo":{"url":"https://corporate.britannica.com/wp-content/themes/eb-corporate/_img/logo.png","@type":"ImageObject"}},"@context":"https://schema.org","@type":"article"},"studentArticle":false,"initialLoad":true}