Quantitative genetics is the study of inheritance at the phenotypic level.

learn more… | top users | synonyms

17
votes
1answer
786 views

Additive genetic variance components from LMER in R

I've set up some dummy data in R which makes 40 genetically related lines, they are all siblings within a line so are genetically related by a factor of ½ thus additive genetic variance should be ...
6
votes
0answers
75 views

Identity by descent among unrelated individuals

I was reading a couple of papers which talk about IBD (Identity by descent) among unrelated individuals (for eg. http://www.pnas.org/content/109/4/1193.long). However they do not seem to clearly ...
3
votes
0answers
45 views

dominance coefficient, why (1+k)?

I'm trying to get a better understanding of quantitative genetics by reading Lynch and Hill 1986. I'm getting stuck with some notation that's used right at the beginning referring to the mutant and WT ...
3
votes
0answers
37 views

More extreme phenotypes when parents are from diverged populations

In quantitative traits we have many loci affecting a trait. If we took a bunch of parents where all mothers and fathers were of a certain value at the upper end of a trait range, and then looked at ...
2
votes
0answers
74 views

Falconer & Mackay population mean calculation & genotypic values

I am reading chapter 7 of Falconer and Mackay where they give a formula to calculate the population mean as a deviation from the heterozygote genotypic value. As an example, imagine a one locus two ...
2
votes
0answers
82 views

What are the common methods to estimate additive genetic variance?

Additive genetic variance can be estimated in a number of ways, and is a key concept in evolutionary biology and quantitative genetics. What are the typical methods (experimental designs) used to ...
1
vote
0answers
129 views

How does geography affect morphological features of the human body

I've seen many times how a person born in one place, goes to another country for a long time, and then they start looking more like the people there, but I never found out how it works. This report ...
0
votes
0answers
27 views

What empirical evidence of genetic assimilation is there?

There have been many articles arguing that we should view the phenotype in the center of evolutionary theory rather than the genotype as done in most population (or quantitative) genetics. A typical ...