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seen Dec 19 '13 at 0:03


Dec
15
comment Do human beings have pheromone receptors?
I think that this is the most accurate information that we currently have available. As this is a science, it can be expected that results will change as new discoveries are made and old discoveries are disproven. As far as I know, there currently isn't much evidence disproving the theory and at least some that suggests human pheromone existence, so controversy at the moment is more doubt in limited evidence than two contradicting theories
Dec
15
comment How can rooted and unrooted (phylogenetic) trees be distinguished from one another
Ok, thanks for your help :)
Dec
15
comment How can rooted and unrooted (phylogenetic) trees be distinguished from one another
And just to clarify, how would the 'extra root node' appear on a diagram? As just a labeled point from where the rest of the tree branches off from?
Dec
15
comment How can rooted and unrooted (phylogenetic) trees be distinguished from one another
So when you say root it by making an arbitrary decision, does that mean labeling a particular ancestral individual as a root? Also, does this consider midpoint rooting?
Dec
15
comment How can rooted and unrooted (phylogenetic) trees be distinguished from one another
I'd say a drawn figure? Like something you would find on a google search for phylogenetic tree (images.google.com/search?tbm=isch&q=phylogenetic%20tree)
Dec
15
comment How can rooted and unrooted (phylogenetic) trees be distinguished from one another
Yes, but how would I be able to tell whether or not a tree has a root Like how to tell between an unrooted tree and a midpoint rooted tree?
Dec
15
comment Do human beings have pheromone receptors?
You could take a look at ncbi.nlm.nih.gov/pubmed/9515961