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I think that maternal effect and maternal inheritance are distinct phenomena. I've never seen the term "maternal effect" used to describe maternal inheritance of DNA. The two phenomenon are clearly distinct (both in classical genetics and molecular genetics). AdamRetchless 02:55, 23 Mar 2004 (UTC)
Bruno in Columbus 14:36, 27 April 2007 (UTC)
What do people think about expanding the discussion of paternal effects and moving this page to parental effect? Tim Vickers 17:57, 4 August 2007 (UTC)
Well Google isn't the best choice to decide on scientific nomenclature. Both maternal and paternal effects are subsets of the larger set of parental effects. Our choices are:
Tim Vickers 14:42, 6 August 2007 (UTC)
Poor word choice, I mean you can't use the number of Google hits to give an authoritative answer on the correct scientific nomenclature. Google is not a reliable source. The term "parental imprinting" is more widely-used but this is specifically genetic, rather than also including purely environmental influences such as nutrition in the womb. Tim Vickers 02:22, 7 August 2007 (UTC)
Paternal effects are known, but are very much rarer than maternal effect genes (see introduction of Genetics paper link), so that topic is always going to be a small sub-set of the larger set of parental effects. Tim Vickers 18:27, 8 August 2007 (UTC)
OK, I can see your point. I'm happy enough with a redirect and a sub-section, I don't regard this as ideal, but until more paternal effect genes are discovered it's probably a reasonable compromise. Tim Vickers 15:13, 9 August 2007 (UTC)
I agree with Tim that structure and logic should take preference over frequency of occurrence, value of the effect or citation. For example: “Rock” (Parent) and “Eagles” (Child) should not be placed under “Beatles” (Child), “Sex” under “Male sex” and “Male sex” redirected to (or placed under) “Female sex” page.
Buzz word now for the effect of a father in genetics is “Male-driven evolution”. It’s a valid well proven effect. It’s more pronounced on evolving (new) characters. It’s widely used in selection. If the cow has more milk the selection scientists will use her father or son to breed not just because she can give 10 calves (vs thousands after artificial insemination by the bull’s sperm) but also because bull (genetically) “gives” more milk then her.
"Parental imprinting" is just a terminology and does not explain anything. The meaning is placenta (new organ) is controlled by genes of a father, while embryo (old system) is controlled by genes of a mother. Let me ask a question: what thumb does embryo suck in the womb and why? Which side of its body is bigger and why? Sashag 16:16, 12 August 2007 (UTC)
This article implies that only the maternal genotype can influence the phenotype of offspring. However, there are copious examples in the literature demonstrating that aspects of the maternal phenotype can influence offspring phenotypes, some have even shown that this can be independent of maternal genotype (e.g. Marshall & Keough 2004, Marine Ecology Progress Series 272. pages 301-305). Offspring size, for example, is one of the most intensively studied maternal effects and has been shown to vary with maternal age, maternal size, maternal growth rate, maternal nutritional condition, maternal hormone concentrations, etc. I would suggest that the article is modified to reflect this. If nobody has any objections I would like to make this change. I'll wait a few weeks to allow for any feedback.
HMRaven 05:21, 18 August 2007 (UTC)
Maternal effects are absolutely not only genetic, they can also be purely environmental. An example is what used to be called a "milk factor". C3H mice are highly susceptible to mammary tumors and this was thought to be inherited. In the end it turned out to be a maternally-transmitted character: a tumor-inducing virus transmitted through mother milk... So you're absolutely right that it's the phenotype, not just the genotype, and as nobody has objected for almost a year, I think you should go ahead! -- Crusio ( talk) 07:03, 29 May 2008 (UTC)
Images from Drosophila embryogenesis could be useful. Tim Vickers ( talk) 16:42, 7 May 2008 (UTC)
Much of the content of this article seems to be rather a sketchy and not greatly accurate description of axis specification in the Drosophila embryo, with barely any attempt to describe why these mutation in these genes have maternal effects. (Apologies if this comment comes across as the sort of thing I would write when marking an essay - it is meant to be constructive). I therefore propose to delete or move much of the content, so we can get back to explaining maternal effects. Any comments? Celefin ( talk) 23:23, 11 April 2009 (UTC)
There is no discussion of phenotypic plasticity which, while researching this topic, I found to be a huge part of adaptive maternal effects and evolution of the phenotypic changes that they contribute to. Having more information on this as would be really helpful for the topic overall. Corrina Tapia ( talk) 02:23, 8 October 2013 (UTC)
I added the section "Adaptive Maternal Effects" and everything that falls under it. Corrina Tapia ( talk) 05:39, 8 November 2013 (UTC)
I note that there are relatively few references in this whole page, including whole paragraphs. I also generally feel that the article is not altogether encyclopedic in style. For example, I am not sure that we should describe this effect as "legitimate", since in scientific theory its all about "currently generally accepted or something, isn't it?
IceDragon64 ( talk) 11:28, 30 December 2017 (UTC)
There is a long-standing article at Telegony (pregnancy) which seems to cover some of the history of the maternal effect, and something needs to be done to relate the two articles. This could be a full merge, or the addition of a cited summary section with main link to Maternal effect and something similar at the other end. What do other editors think would be best? Chiswick Chap ( talk) 10:15, 22 January 2018 (UTC)
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
I think that maternal effect and maternal inheritance are distinct phenomena. I've never seen the term "maternal effect" used to describe maternal inheritance of DNA. The two phenomenon are clearly distinct (both in classical genetics and molecular genetics). AdamRetchless 02:55, 23 Mar 2004 (UTC)
Bruno in Columbus 14:36, 27 April 2007 (UTC)
What do people think about expanding the discussion of paternal effects and moving this page to parental effect? Tim Vickers 17:57, 4 August 2007 (UTC)
Well Google isn't the best choice to decide on scientific nomenclature. Both maternal and paternal effects are subsets of the larger set of parental effects. Our choices are:
Tim Vickers 14:42, 6 August 2007 (UTC)
Poor word choice, I mean you can't use the number of Google hits to give an authoritative answer on the correct scientific nomenclature. Google is not a reliable source. The term "parental imprinting" is more widely-used but this is specifically genetic, rather than also including purely environmental influences such as nutrition in the womb. Tim Vickers 02:22, 7 August 2007 (UTC)
Paternal effects are known, but are very much rarer than maternal effect genes (see introduction of Genetics paper link), so that topic is always going to be a small sub-set of the larger set of parental effects. Tim Vickers 18:27, 8 August 2007 (UTC)
OK, I can see your point. I'm happy enough with a redirect and a sub-section, I don't regard this as ideal, but until more paternal effect genes are discovered it's probably a reasonable compromise. Tim Vickers 15:13, 9 August 2007 (UTC)
I agree with Tim that structure and logic should take preference over frequency of occurrence, value of the effect or citation. For example: “Rock” (Parent) and “Eagles” (Child) should not be placed under “Beatles” (Child), “Sex” under “Male sex” and “Male sex” redirected to (or placed under) “Female sex” page.
Buzz word now for the effect of a father in genetics is “Male-driven evolution”. It’s a valid well proven effect. It’s more pronounced on evolving (new) characters. It’s widely used in selection. If the cow has more milk the selection scientists will use her father or son to breed not just because she can give 10 calves (vs thousands after artificial insemination by the bull’s sperm) but also because bull (genetically) “gives” more milk then her.
"Parental imprinting" is just a terminology and does not explain anything. The meaning is placenta (new organ) is controlled by genes of a father, while embryo (old system) is controlled by genes of a mother. Let me ask a question: what thumb does embryo suck in the womb and why? Which side of its body is bigger and why? Sashag 16:16, 12 August 2007 (UTC)
This article implies that only the maternal genotype can influence the phenotype of offspring. However, there are copious examples in the literature demonstrating that aspects of the maternal phenotype can influence offspring phenotypes, some have even shown that this can be independent of maternal genotype (e.g. Marshall & Keough 2004, Marine Ecology Progress Series 272. pages 301-305). Offspring size, for example, is one of the most intensively studied maternal effects and has been shown to vary with maternal age, maternal size, maternal growth rate, maternal nutritional condition, maternal hormone concentrations, etc. I would suggest that the article is modified to reflect this. If nobody has any objections I would like to make this change. I'll wait a few weeks to allow for any feedback.
HMRaven 05:21, 18 August 2007 (UTC)
Maternal effects are absolutely not only genetic, they can also be purely environmental. An example is what used to be called a "milk factor". C3H mice are highly susceptible to mammary tumors and this was thought to be inherited. In the end it turned out to be a maternally-transmitted character: a tumor-inducing virus transmitted through mother milk... So you're absolutely right that it's the phenotype, not just the genotype, and as nobody has objected for almost a year, I think you should go ahead! -- Crusio ( talk) 07:03, 29 May 2008 (UTC)
Images from Drosophila embryogenesis could be useful. Tim Vickers ( talk) 16:42, 7 May 2008 (UTC)
Much of the content of this article seems to be rather a sketchy and not greatly accurate description of axis specification in the Drosophila embryo, with barely any attempt to describe why these mutation in these genes have maternal effects. (Apologies if this comment comes across as the sort of thing I would write when marking an essay - it is meant to be constructive). I therefore propose to delete or move much of the content, so we can get back to explaining maternal effects. Any comments? Celefin ( talk) 23:23, 11 April 2009 (UTC)
There is no discussion of phenotypic plasticity which, while researching this topic, I found to be a huge part of adaptive maternal effects and evolution of the phenotypic changes that they contribute to. Having more information on this as would be really helpful for the topic overall. Corrina Tapia ( talk) 02:23, 8 October 2013 (UTC)
I added the section "Adaptive Maternal Effects" and everything that falls under it. Corrina Tapia ( talk) 05:39, 8 November 2013 (UTC)
I note that there are relatively few references in this whole page, including whole paragraphs. I also generally feel that the article is not altogether encyclopedic in style. For example, I am not sure that we should describe this effect as "legitimate", since in scientific theory its all about "currently generally accepted or something, isn't it?
IceDragon64 ( talk) 11:28, 30 December 2017 (UTC)
There is a long-standing article at Telegony (pregnancy) which seems to cover some of the history of the maternal effect, and something needs to be done to relate the two articles. This could be a full merge, or the addition of a cited summary section with main link to Maternal effect and something similar at the other end. What do other editors think would be best? Chiswick Chap ( talk) 10:15, 22 January 2018 (UTC)