8,871 reputation
11543
bio website zoology.ubc.ca/~matthey
location Vancouver, Canada
age
visits member for 1 year, 4 months
seen 52 mins ago

My name is Remi Matthey-Doret and I am a PhD Candidate at the University of British Columbia (UBC), Department of Zoology in the lab of Mike Whitlock. I am a theoretician passionate about population genetics and conservation genetics.

Please have a look to my webpage for more information.


4h
comment Is natural absense of appendix result of the internal evolution?
I am afraid that internal evolution is not only a poor wording but actually does not have a useful meaning. It doesn't mean among cells natural selection neither, gene-level selection. In your case it seems that "internal evolution" just means "evolution of internal organs". So the question becomes: "Does the frequency of appendix the result of evolutionary processes". Assuming that there is some genetic variance underlying appendix presence/absence, the answer is yes by the definition of "evolution".
11h
revised What percentage of the (additive or not) genetic variance is explained by the $n$ most important loci?
deleted 6 characters in body
13h
comment What percentage of the (additive or not) genetic variance is explained by the $n$ most important loci?
Thanks for your answer. Please have a look to my update in my question and let me know if this makes more sense to you now.
13h
revised What percentage of the (additive or not) genetic variance is explained by the $n$ most important loci?
added 780 characters in body
Nov
17
comment How does rate of evolution/innovation scale with population size?
Oops. You are totally right! Temporary brain malfunctioning! To defend myself more than I should, I would note that I would expect a rough tendency for species with small genome size to have large population size. I deleted my comment above. Thanks!
Nov
17
revised How does rate of evolution/innovation scale with population size?
deleted 402 characters in body
Nov
17
revised How does rate of evolution/innovation scale with population size?
added 402 characters in body
Nov
17
comment How does rate of evolution/innovation scale with population size?
There is probably other processes I forget about. Also, there is probably some sources that offer some quantitative measure of the general effect of population size on adaptation.
Nov
17
answered How does rate of evolution/innovation scale with population size?
Nov
17
comment Are there any known mutual symbiotic relationships that has more than two agents?
symbiosis is a kind of relationship between two (or more) individuals from different species benefiting to both individuals (unlike commensalism or predation/parasitism), so I think the human microbiome is a good example. From @Alex comment above, I guess that Alex might be interested in obligate symbiosis. Human are totally dependent on their microbiome. There might have at least two species of bacteria living in humans gut that can't live anywhere else and without which humans cannot live. If this is the case, the human microbiome, is again a good example.
Nov
10
comment Will genetically modified food affect our health?
I agree with the above comments. However, I think this question would be a better fit on skeptics.SE. By doing a simple search for "GMO" on skeptics.SE you will get several interesting hits. The question might be considered as a duplicate of other questions on skeptics.SE. I would tend to think this question should be answered following these guidelines
Nov
7
revised How to define “Quasifixation” in continuous approximation of finite population?
added 72 characters in body
Nov
6
revised Is there an association between environmental and mutational robustness?
added 1 character in body
Nov
6
comment Why is the threshold between human embryo and human fetus defined as 8 weeks after fertilization?
I delete my answer as it does no longer address your question. I don't have enough knowledge in developmental biology in order to answer your question, so I'll let someone else working on your question. You may still receive some comments on your introduction but I think the question will be accepted from now on. You should cite wikipedia for the definition you are using of embryo.
Nov
6
comment Why is the threshold between human embryo and human fetus defined as 8 weeks after fertilization?
I would recommend you to just reduce your whole question to what you copy-pasted from my comment (and modify your title accordingly).
Nov
6
comment Why is the threshold between human embryo and human fetus defined as 8 weeks after fertilization?
So the question might be "Why did we use the threshold between the definitions of human embryo and human fetus at 8 weeks after fertilization and not at 7 weeks or 9? What's happening at the 8th week?". Is that right?
Nov
6
comment Why is the threshold between human embryo and human fetus defined as 8 weeks after fertilization?
Are you seeking for a science article that define the words "baby" and "embryo"?! This is going to be hard to find as these words are so easy and common. Similarly there are probably no science article who define the word "increase" as everybody know what it means. But I don't know maybe someone will find what you're looking for. But you should probably not expect a different definition from the wikipedia ones!
Nov
6
revised Definitions of robustness and canalization
deleted 504 characters in body
Nov
6
comment Definitions of robustness and canalization
Are you aware of an article that directly compares the definitions of these two concepts?
Nov
6
revised What are the costs associated with carrying lots of genetic material
added 18 characters in body