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Jul
26
comment People who are very “aware” or very sensitive, is the brain more advanced or less advanced?
@Yvonne Liew: Voting to close a question is not being nasty. Commenting on why closing is recommended is encouraged on StackExchange and is not being nasty.
Jul
18
comment Why can't plasma proteins migrate from capillaries?
See Leukocyte extravasation.
Jun
30
comment What is it that creates that wonderful smell after a fresh rain?
The Wikipedia article on Petrichor mentions geosmin, and indicates it is a compound different than petrichor.
Jun
22
comment Are human chromosomes connected or separate molecules?
@canadianer, Remi.b,: edited to reflect what you pointed out.
May
28
comment What is “theae folium”?
Camellia sinensis is the botanical name for the plant whose leaves are used for the beverage commonly known as tea in English (green tea, black tea, etc.). The plant of course has a flower in the normal course of its growth (as well as leaves, seeds, roots, etc.)
May
17
comment Inoculation vs. vaccination
Interestingly, the word vaccination is derived from vacca, the Latin word for cow.
Apr
30
comment Synteny, genetics?
What do you mean by "the same genes of order"? Did you mean something like "the same genes, in the same order,"?
Jan
15
comment Why don't myopic people see the world upside-down?
Undoubtedly interesting, but not relevant to the question; myopia does not cause image inversion.
Nov
21
comment Looking for a gene in my raw genetic data. What are the possible causes for this?
In short, rs35705950 is not a gene, but rather a SNP, a SNP that occurs within the gene MUC5B. 23andMe measures a selected subset of human SNPs, less than 0.1% of the genome.
Nov
4
comment Evidence & discussions of hard polytomy
Sorry, no. Besides, I'm not knowledgeable in this area; I just read some abstracts found via Google Scholar. I suspect that essentially all "hard" polytomies are just soft polytomies where evidence to resolve them is hard to acquire.
Mar
26
comment How does the creative process of Biological Evolution work?
The Blind Watchmaker would be a good book to read, probably better than The Selfish Gene. In any case, skip The Extended Phenotype until you are well acquainted with biology and evolution.
Mar
17
comment Dimensional analysis Question
Shigeta's equation should have used "hgb" instead of "rbc". To turn 1.7g hgb into rbc, you multiply it by the .3145 hgb/rbc value. Note the dimensional units work out.
Mar
2
comment What's the point of glycolysis in fermentation?
Turning 2 ATP into 4 ATP isn't good?
Feb
21
comment Does recombination increase the additive genetic variance for fitness?
I don't think this response addresses the quote since this concerns crossing over. The quote says "bringing together favourable alleles from different chromosomes", which doesn't involve crossing over.
Feb
21
comment How does the brain know where a signal came from? What is the addressing system
If you perceive a sensation, it had a path; the signaling is indeed massively parallel. Some sensations are processed in the periphery and a derived signal sent on to the brain; The density also varies (the hands have many nerves, the back, few). There is also peripheral processing like the knee reflex. Also there are nerves that have little or no flow to the brain; see autonomic nervous system. If this answer is what you wanted, you can accept it by clicking the checkmark to the left.
Feb
14
comment why can't we digest cellulose
We don't digest cellulose; it just passes through us unchanged.
Jan
27
comment PedigreeAnalysis Genetics
The G's seem mostly ok, but you don't know that Maria's grandmother is "GG". The A/a's are messed up; you're treating the disease allele as recessive, but it's dominant (XA). [but then I have no formal training; I've never had a genetics course or even college biology.]
Jan
26
comment PedigreeAnalysis Genetics
ApothemCyte, the diagrams are concerned with both the autosomal disease and the X-linked disease; look at whether the person symbol is shaded on the left side or the right side.
Nov
8
comment Are wild cats the same species as house cats?
@fileunderwater, Yes, species is useful for thinking about how groups relate and evolve; when you want to look closely, though, it's good to remember the species boundaries are gray, not black-and-white.
Nov
7
comment Are wild cats the same species as house cats?
The "species" concept is an attempt to fit a simple human conceptual category onto a reality that is not that simple. The reality is a continuum of reproductive compatibility between an individual and any other organism rather than a binary compatible/incompatible relationship which would actually be a basis for defining "species".