50/500 rule | biology and population analysis (2023)

","url":"Introduction","wordCount":0,"sequence":1},"imarsData":{"INFINITE_SCROLL":"2020458|1,1933533|1,178597|2,470303|10,66191|10","HAS_REVERTED_TIMELINE":"false"},"npsAdditionalContents":{},"templateHandler":{"name":"INDEX"},"paginationInfo":{"previousPage":null,"nextPage":null,"totalPages":1},"uaTemplate":"INDEX","infiniteScrollList":[{"p":1,"t":2020458},{"p":1,"t":1933533},{"p":2,"t":178597},{"p":10,"t":470303},{"p":10,"t":66191}],"familyPanel":{"topicInfo":{"id":2020458,"title":"50/500 rule","url":"https://www.britannica.com/science/50-500-rule","description":"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…","type":"TOPIC","titleText":"50/500 rule","metaDescription":"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…","identifierHtml":"biology and population analysis","identifierText":"biology and population analysis","topicClass":"science","topicKey":"50-500-rule","articleContentType":"INDEX","ppTecType":"CONCEPT","gaTemplate":"INDEX","topicType":"INDEX","relativeUrl":"/science/50-500-rule","assemblyLinkPrefix":"/media/1/2020458/"},"topicLink":{"title":"50/500 rule","url":"https://www.britannica.com/science/50-500-rule"},"tocPanel":{"title":"Directory","itemTitle":"References","toc":null},"groups":[]},"byline":null,"citationInfo":null,"websites":null,"freeTopicReason":"TOPIC_IS_INDEX_PAGE","topicCollectionLinks":[],"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":{"logo":{"url":"https://corporate.britannica.com/wp-content/themes/eb-corporate/_img/logo.png","@type":"ImageObject"},"name":"Encyclopedia Britannica","@type":"Organization"},"@context":"https://schema.org","@type":"article"},"studentArticle":false,"initialLoad":true,"moneyRedirectedArticle":false}

biology and population analysis

Feedback

Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

(Video) Real Estate Investing Rules You MUST Know (The 2%, 50% & 70% Rules)

External Websites

(Video) Could 2 People Actually Repopulate Earth

Learn about this topic in these articles:

research on minimum viable population

  • In 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…

    Read More

FAQs

50/500 rule | biology and population analysis? ›

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.

What is the 50 500 rule for minimum viable population? ›

The so-called "50/500 rule", where a population needs 50 individuals to prevent inbreeding depression, and 500 individuals to guard against genetic drift at-large, is an oft-used benchmark for an MVP, but a recent study suggests that this guideline is not applicable across a wide diversity of taxa.

What is the minimum amount of people needed to repopulate? ›

This means that, in a hypothetical apocalypse, humanity would need a lot more than a handful of survivors to repopulate effectively. However, to retain evolutionary potential – to remain genetically flexible and diverse – the IUCN criteria suggest we would need at least 500 effective individuals.

How many humans needed to repopulate the earth? ›

Anthropologist John Moore's estimate, which was published by Nasa in 2002, was modelled on small migrating groups of early humans – around 160 people. He recommends starting with young, childless couples and screening for the presence of potentially dangerous recessive genes.

What is the effective population size of inbreeding? ›

For a diploid organism the coefficient of inbreeding (f) is the average inbreeding coefficient (over individuals) in the population considered. The inbreeding effective size in generation t is defined as N eI = 1/(2Δf), where Δf = (ft–ft 1)/(1−ft 1) and ft is the inbreeding coefficient in generation t.

What is minimum viable population and population viability analysis? ›

Population viability analysis (PVA) is the methodology of estimating the probability that a population of a specified size will persist for a specified length of time. The minimum viable population (MVP) is the smallest population size that will persist some specified length of time with a specified probability.

What is minimum viable criteria? ›

The minimum viable product approach involves prioritizing product requirements to the point that they deliver core functionality to deal with the market problems; the rest is only “nice to have.” Note that this system requires more rigour than usual in prioritizing your requirements, as the nature of frequent ...

Can only 2 people repopulate the earth? ›

While it is theoretically possible for two people to repopulate the Earth, it would be extremely difficult and unlikely.

How small does a population have to be to be considered endangered? ›

A species is classified as endangered when there are fewer than 2,500 mature individuals. When a species population declines by at least 20 percent within five years or two generations, it is also classified as endangered.

What is the amount of individuals in a population that a habitat can support? ›

Explanation: The carrying capacity of a certain habitat is the maximum number of individuals that it can support. Population numbers are limited by resources such as space, food, and water. Current estimates of Earth's carrying capacity are around 10 billion.

How many humans can the Earth realistically support? ›

Earth's capacity

Many scientists think Earth has a maximum carrying capacity of 9 billion to 10 billion people.

What is the fewest humans in history? ›

Around 70,000 years ago, humanity's global population dropped down to only a few thousand individuals, and it had major effects on our species.

When did humans stop inbreeding? ›

Early humans seem to have recognised the dangers of inbreeding at least 34,000 years ago, and developed surprisingly sophisticated social and mating networks to avoid it, new research has found.

Who has the highest rate of inbreeding? ›

Consanguineous unions range from cousin-cousin to more distant relatedness, and their prevalence varies by culture. Prevalence is highest in Arab countries, followed by India, Japan, Brazil and Israel.

What percentage of inbreeding is acceptable? ›

Breeders should definitely not be breeding litters with COIs higher than 10%. Below 5%, is ideal. We try to breed litters that are below the breed average and ideally also below 5%.

What state has the highest population of inbreeding? ›

Generally, inbreeding is more common in the southeast region of the U.S. and more rural states. Approximately 70% of inbred families live in desolate areas. Inbreeding is common, specifically, in the eastern part of Kentucky, and the region is plagued by the stereotype that every family is an inbred family.

What is the 500 rule equation? ›

Basically, to determine the optimal length of exposure, you take 500 and divide it by the effective focal length of the lens (Exposure time = 500/[crop-factor × focal length]). Thus, the shorter the focal length the longer the shutter speed, and the better images you'll get.

How do you calculate 500 rule? ›

Rule of 500 (or 300)

You take the number 500 and divide by the focal length of your lens. For example, if you have a 20-mm wide angle lens, then 500 / 20 = 25. You can shoot for 25 seconds on a tripod before the stars start to streak.

What is the 50 500 rule in marine conservation? ›

First, an effective population size of at least 50 (Franklin, 1980, Soulé, 1980) has been long recommended as a 'rule' for avoiding inbreeding depression in the short term. Second, Ne = 500 has been considered sufficient to retain evolutionary potential in perpetuity (Franklin, 1980, Lande and Barrowclough, 1987).

What is meant by the rule of 500? ›

Description: The 500-Rule states that to obtain a clear image of stars without trails, take the number 500 and divided it by the focal length to get your exposure time. For example, a 20 mm lens would call for an exposure of about 25 seconds and theoretically, still obtain the stars without trails.

Videos

1. Understanding Inbreeding and Outcrossing Depression: Breeding and Genetics Part 2
(Old Ways Rising Farm)
2. Population Ecology pt1
(Brett Dooley)
3. How to Calculate CFU per ml of Bacterial Sample? in 3 Steps || cfu/ml in Microbiology
(biologyexams4u)
4. America vs china || mathematics challenge || 🤣🤣🤣😅😜
(Bikash das Kumar)
5. By applying candlestick analysis, a 23-yr-old generated millions! #Face2Face with Sthitapragyan Pati
(Elearnmarkets by StockEdge)
6. MATH 45: 4.4 - 4.6 LECTURE
(MATH 4B)
Top Articles
Latest Posts
Article information

Author: Merrill Bechtelar CPA

Last Updated: 09/20/2023

Views: 5616

Rating: 5 / 5 (50 voted)

Reviews: 89% of readers found this page helpful

Author information

Name: Merrill Bechtelar CPA

Birthday: 1996-05-19

Address: Apt. 114 873 White Lodge, Libbyfurt, CA 93006

Phone: +5983010455207

Job: Legacy Representative

Hobby: Blacksmithing, Urban exploration, Sudoku, Slacklining, Creative writing, Community, Letterboxing

Introduction: My name is Merrill Bechtelar CPA, I am a clean, agreeable, glorious, magnificent, witty, enchanting, comfortable person who loves writing and wants to share my knowledge and understanding with you.