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21h
comment Are low-intensity radio-waves carcinogenic?
Could you cite some of the literature in your response?
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
comment Why do low temperatures kill
See tardigrade: popularmechanics.com/space/a11137/…
Jul
20
comment What chordata evolve first limb
As fileunderwater suggests, you can and should update your question with the additional information from these comments.
Jul
20
comment What chordata evolve first limb
Limbs with bone in them and fins with fin rays (lepidotrichia) in them are different. Which one are you interested in?
Jul
12
comment Why do skinny people live for shorter than the norm even though calorie restriction extends life expectancy?
Could you include a link to these statistics?
Jul
9
comment Dogs “covering” their Urine/Feces Indoors
I'm voting to close this question as off-topic because it's better suited for pets.SE.
Jul
5
comment What is the reason our body stops producing collagen/elastin?
Do you have a citation or source that asserts that elastin and collagen production cease?
Jul
3
comment Efficient algorithm to calculate various population divergence statistics
Have you looked at BioPython? Specifically the Genepop module (biopython.org/wiki/PopGen_Genepop) looks useful. If you've already got some Python experience, it might be the fastest way to get started.
Jun
26
comment Why does human hair grow over our eyes
@MattDMo Apologies. I read a non-existant "not" in there.
Jun
24
comment If dinosaurs could have feathers, would they still be reptiles?
You say "Some dinosaurs actually had feathers". I'd go further and say that every taxon that we know of that has or had feathers is a dinosaur.
Jun
23
comment Is there a name for this phenomenon described in “Phylogenies and the Comparative Method”?
@AliceD The axes are arbitrary. X and Y don't matter, nor do their units. The point is to show that the apparent moderate positive correlation between X and Y in the upper figure masks underlying structure. When you separate by 2 monophyletic clades (boxes and Xs), there is clear separation and within groups there isn't any correlation.
Jun
19
comment If dinosaurs could have feathers, would they still be reptiles?
@jamessqf Birds are reptiles as are dinosaurs. biology.stackexchange.com/questions/17546/…
Jun
18
comment What does the hominin phylogenetic tree look like?
No, it's fine as is. The tree is the tree and is (very likely) technically correct. It's just that the devil is in the details. I'm sure the bottom tree is equally poorly supported.
Jun
18
comment What does the hominin phylogenetic tree look like?
Great answer, but one thing to note about the upper tree is that the Bremer support values are really really low (0.2 to 0.5) particularly within Homo. So basically there is no resolution at that point. They may as well have a large polytomy at that point. This is not a fault of the authors but of all these fossils being fragmentary.
Jun
17
comment Why are the organs for reproduction and urinary excretion combined?
@Abram You can just edit your answer to include more information.
May
11
comment did pteranodons live in colonies?
By "Pteranodon" do you mean pterosaurs as a whole or specifically the genus Pteranodon?