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The use of chemical and mechanical systems to break dormancy and increase germination.

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Re: Stratification

besides scarification, there's soaking the hard seed of a grape variety for 6 hrs keeping the water warm(don't let it cool). I found that tiny holes in the cells of the seed (especially through the nucleus of a cell) allows water and nutrients to enter that cell very quickly resulting in a larger, s...

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by pancoacterie
Sun Oct 02, 2011 11:52 pm
Forum: Botany Discussion
Topic: Stratification
Replies: 9
Views: 10512

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... we determined of each sample whether it was (1) considered representative by the original authors, (2) drawn randomly, (3) based on an explicated stratification scheme, (4) composed of healthy test-takers, and (5) considered by the original authors as normal in terms of Socio-Economic Status (SES). ...

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by TruthIsHoly
Fri Jun 25, 2010 6:47 pm
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 75
Views: 332687

Proliferation and Precipitation Theory

... fitness very high. Other people value intelligence or assertiveness. The most controversial aspect of my theory suggests that a certain amount of stratification or grouping will occur. People in certain socioeconomic segments tend to value specific traits. Highly educated and intelligent individuals ...

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by seta37
Tue Mar 02, 2010 8:07 pm
Forum: Evolution
Topic: Proliferation and Precipitation Theory
Replies: 3
Views: 5708

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... tradition of Jeffersonian democracy. Gould withholds from his readers that The Bell Curve is mainly an empirical work about the causes of social stratification and that it reached its conclusions only after fully analyzing a 12-year longitudinal study of 12,486 youths (3,022 of whom were African ...

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by TJJ
Fri May 16, 2008 12:13 am
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 75
Views: 332687

Stratification analysis

Hello every one I need a specialistic help on stratification analysis. I'm doing a case/contro study on a multifactrorial genetics disease. 90 SNPs are analysed in the 2 populations (affected vs unaffected). The 90 SNPs have been choosen already ...

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by micky
Fri Nov 02, 2007 12:51 pm
Forum: Genetics
Topic: Stratification analysis
Replies: 0
Views: 1204
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