Inbreeding depression - Revision history

RichardWSmith at 06:52, 3 March 2021

2021-03-03T06:52:24Z

RichardWSmith: Link to MVP on wiki, and a rough minimum human population.

2021-03-03T06:50:28Z

Link to MVP on wiki, and a rough minimum human population.

Michel Lamontagne: Added large population growth as a solution

2020-10-13T17:27:12Z

Added large population growth as a solution

Michel Lamontagne at 17:24, 13 October 2020

2020-10-13T17:24:34Z

Jburk at 20:32, 17 December 2018

2018-12-17T20:32:31Z

Farred: Undo revision 7567 by 82.165.11.126 (Talk) vandalism

2012-10-29T18:16:25Z

Undo revision 7567 by 82.165.11.126 (Talk) vandalism

82.165.11.126: /* Cause */

2012-10-29T14:38:25Z

Cause

Laertes: Interlinks

2008-12-05T01:03:08Z

Interlinks

Rfc: cause and another solution

2008-10-29T20:40:15Z

cause and another solution

Rfc: link +

2007-12-17T13:57:26Z

link +

← Older revision		Revision as of 06:52, 3 March 2021
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−	During settlement planning, if the [[human]] [[population]] is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of [[food]]/[[natural resources\|resources]]). A Minimal Viable Population (MVP) of ~~500 to~~ 5,000 genetically diverse individuals has been suggested for large mammals.	+	During settlement planning, if the [[human]] [[population]] is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of [[food]]/[[natural resources\|resources]]). A Minimal Viable Population (MVP) of 5,000 genetically diverse individuals has been suggested for large mammals.

	==Cause==		==Cause==

@@ Line 1: / Line 1: @@
-During settlement planning, if the [[human]] [[population]] is to [[sexual reproduction|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of [[food]]/[[natural resources|resources]]).
+During settlement planning, if the [[human]] [[population]] is to [[sexual reproduction|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of [[food]]/[[natural resources|resources]]).  A Minimal Viable Population (MVP) of 500 to 5,000 genetically diverse individuals has been suggested for large mammals.
 ==Cause==
@@ Line 9: / Line 9: @@
 *Genetic screening and selection of the settlers who are going to [[Mars]]. If the settlers do not carry any genetic defect, the  inbreeding depression does not occur, no matter how small the population is. The problem is: Not all defects are known. Only a small number can be detected with today's knowledge, but that knowledge is supposed to increase rapidly in the next few years.
 *Another solution is to rapidly increase the gene pool with a high level of immigration.  With this scenario there is no inbreeding because the population is too large and diverse.  This solution requires low transportation costs or a vigorous colonization program, or both.  This must go hand in hand with a great increase of food production, to avoid overpopulation.  And eventually require a lot of energy.  A case can be made that available energy is the most important driver for population and therefore for avoiding inbreeding.
 [[Category:Psychology]]

@@ Line 8: / Line 8: @@
 *To achieve large genetic diversity a possible solution is to bring a few adult colonists and many fertilized human eggs to Mars. This gives an opportunity to build a big community on Mars with a comparatively small transport effort. (inspired by ''[[Short Stories#"The Cascade" by Sean McMullen|The Cascade]]'')
 *Genetic screening and selection of the settlers who are going to [[Mars]]. If the settlers do not carry any genetic defect, the  inbreeding depression does not occur, no matter how small the population is. The problem is: Not all defects are known. Only a small number can be detected with today's knowledge, but that knowledge is supposed to increase rapidly in the next few years.
-*Another solution is to rapidly increase the gene pool with a high level of immigration.  With this scenario there is no inbreeding because the population is too large and diverse.  This solution requires low transportation costs or a vigorous colonization program, or both.
+*Another solution is to rapidly increase the gene pool with a high level of immigration.  With this scenario there is no inbreeding because the population is too large and diverse.  This solution requires low transportation costs or a vigorous colonization program, or both.  This must go hand in hand with a great increase of food production, to avoid overpopulation.  And eventually require a lot of energy.  A case can be made that available energy is the most important driver for population and therefore for avoiding inbreeding.
 [[Category:Psychology]]

@@ Line 5: / Line 5: @@
 ==Possible solutions==
 *To achieve large genetic diversity a possible solution is to bring a few adult colonists and many fertilized human eggs to Mars. This gives an opportunity to build a big community on Mars with a comparatively small transport effort. (inspired by ''[[Short Stories#"The Cascade" by Sean McMullen|The Cascade]]'')
 *Genetic screening and selection of the settlers who are going to [[Mars]]. If the settlers do not carry any genetic defect, the  inbreeding depression does not occur, no matter how small the population is. The problem is: Not all defects are known. Only a small number can be detected with today's knowledge, but that knowledge is supposed to increase rapidly in the next few years.
 [[Category:Psychology]]

← Older revision		Revision as of 20:32, 17 December 2018
Line 8:		Line 8:
	*Genetic screening and selection of the settlers who are going to [[Mars]]. If the settlers do not carry any genetic defect, the inbreeding depression does not occur, no matter how small the population is. The problem is: Not all defects are known. Only a small number can be detected with today's knowledge, but that knowledge is supposed to increase rapidly in the next few years.		*Genetic screening and selection of the settlers who are going to [[Mars]]. If the settlers do not carry any genetic defect, the inbreeding depression does not occur, no matter how small the population is. The problem is: Not all defects are known. Only a small number can be detected with today's knowledge, but that knowledge is supposed to increase rapidly in the next few years.

−	[[Category: ~~Health~~]]	+	[[Category:Psychology]]

← Older revision		Revision as of 01:03, 5 December 2008
Line 1:		Line 1:
−	During settlement planning, if the human population is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of food/[[natural resources\|resources]]).	+	During settlement planning, if the [[human]] [[population]] is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of [[food]]/[[natural resources\|resources]]).

	==Cause==		==Cause==

← Older revision		Revision as of 13:57, 17 December 2007
Line 1:		Line 1:
−	During settlement planning, if the human population is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of food/resources).	+	During settlement planning, if the human population is to [[sexual reproduction\|reproduce]], careful consideration into the size of the starting population must be carried out. The size of the human population must not be too small due to the risk of '''Inbreeding Depression''' (causing genetic disorders) and it must not be too big due to the risk of [[overpopulation]] (causing lack of food/[[natural resources\|resources]]).

	===Possible solutions===		===Possible solutions===