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Aug
22
revised Can anyone ID this flower plant by the photo?
Clean up grammar
Aug
22
comment Why do crabs spit?
Can you add some references to your answer, specifically the "airing out" process and those who hypothesize that stress is the cause?
Aug
22
revised Why we do not get hurt from HCl secreted in the stomach?
Cleaning up grammar. Making the title a question.
Aug
22
answered Construct Phylogeny form Edgelist
Aug
22
comment Construct Phylogeny form Edgelist
It looks like the phylo constructor changed since the link posted above: stat.ethz.ch/pipermail/r-sig-phylo/2014-May/003467.html
Aug
22
comment Construct Phylogeny form Edgelist
It seems like standard edge list format is two columns (e.g., for igraph: shizukalab.com/toolkits/sna/sna_data). Can you output your list in that format?
Aug
19
comment Why do sneezes come out the mouth?
To say that "all of the rapidly-expelled air" comes out of hte mouth is not accurate. Maybe the amount that comes out of the nose is sufficient.
Aug
19
comment Why do sneezes come out the mouth?
Your premise is wrong: si.wsj.net/public/resources/images/…
Aug
17
reviewed Approve What is the percentage of people living in England in 1500 AD whose lineage is still alive?
Aug
10
answered What is the basis for the determining sex from position of adult pelvis?
Aug
9
comment Is it “easier” for researchers to detect evolutionary ancestry than distance in the evolutionary tree?
In short, extant species are not ancestors of one another because, even if they are sister taxa, each has its own separate evolutionary history since they diverged. So, no to question 1.
Aug
7
awarded  Enlightened
Aug
7
awarded  Nice Answer
Jul
30
revised Driving force for speciation for millions of species today
Fixing some grammar
Jul
28
reviewed Leave Closed Why are nitrogenous bases of DNA hydrophobic if they can hydrogen bond?
Jul
23
comment What form of reproduction did the first land animals use?
Are you thinking of vertebrates or non-vertebrates?
Jul
23
comment Human Bones classification and anatomy quiz
@AliceD I disagree. Here's a question with a valid attempt at answer, seeking clarification. Seems like a reasonable homework question. Maybe not the more interesting, but valid and worthy of answering.
Jul
22
comment Human Bones classification and anatomy quiz
If you are voting down, please leave a comment.
Jul
22
comment Human Bones classification and anatomy quiz
As you not in your question, I think there are some difficulties in translation. I suspect that "plane" should be translated as "flat", that "mixed" is likely "irregular", and "odd" and "even" are "paired" and "unpaired". Does that sound right?
Jul
21
reviewed Approve How do we know the human species arose in Africa?