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"Live a good life. If there are gods and they are just, they will not care how devout you have been, but will welcome you based on the values you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memory of your loved ones. I am not afraid."

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Jan
26
comment Why are 3 nucleotides used as codons for amino-acid mapping in DNA?
I have asked and answered this here because I had posted this answer to the linked question, but that was not truely answering it. There are now much better alternative answers, so I have asked the question I actually answered here!
Jan
26
asked Why are 3 nucleotides used as codons for amino-acid mapping in DNA?
Jan
26
answered Why are 3 nucleotides used as codons for amino-acid mapping in DNA?
Jan
25
awarded  Enlightened
Jan
25
awarded  Nice Answer
Jan
5
awarded  Nice Question
Jan
5
comment Why does human facial and head hair continue to grow?
Another closely related question
Jan
5
reviewed Approve suggested edit on Is the eyes' movement discrete?
Dec
12
comment Athletes: nature vs. nurture?
Hi @rg255 - thanks for the information and your opinions, but I was hoping for links to studies (like the one in your comment) where authors have tested for genetic contributions. I am of course expecting a large environmental contribution, but as you suggest the genetic contributions may be sport specific (e.g. height-increasing alleles for basketballers, bulk-increasing alleles for sumo-wrestling... etc). When I have some time later I will follow-up the paper you have sent, as this is quite an old study and have been cited almost 200 times! Clearly some other studies too. Many thanks.
Dec
9
accepted Is cell senescence in culture comparable to that in vivo?
Dec
5
comment Is cell senescence in culture comparable to that in vivo?
Many thanks indeed for your input, and the links.
Dec
5
reviewed Reviewed What happens when we know that there is something that we forgot but we can't remember what it was?
Dec
5
comment Is cell senescence in culture comparable to that in vivo?
I wouldn't have said redundant, simply because that is what our in vivo experiment was designed to emulate - we have aged a culture of cells (human primary cell lines) by repeated passage until growth arrest (confirmed by β-galactosidase, morphological changes, and drastic slowing of doubling time). We are now using these as models of senescence in vitro. If I understand you correctly then this is a reasonable model because senescent cells tend to display quite a homogenous phenotype? So even though senescent cells in vitro may have arrived by a different route, this is still a good model?
Dec
4
comment Is cell senescence in culture comparable to that in vivo?
Hi - thanks for the info on senescent cells. So you are saying that cells senesced in culture are comparable to those in vivo? Or you are saying that they are not comparable, because senescent cells in vivo are not necessarily replicatively senesced cells?
Nov
26
reviewed Leave Open Good book on Origin of Life
Nov
9
reviewed Approve suggested edit on Tuna fish in Baltic sea?
Nov
6
accepted Can epigenetic changes affect reproductive success?
Nov
6
accepted Does mixing alcoholic drinks really make you more drunk?
Oct
8
awarded  Citizen Patrol
Oct
8
comment Do diurnal birds of prey recognize each other by their appearance?
@Everyone that is true of course - but I imagine that a bird of prey would call to identify themselves to another bird, as you would have to be much closer to identify by sight. We use sound to identify people easily too - over the phone for example we can easily recognize a voice we know, without having any prior knowledge as to who it may be. I'm speculating of course, but it seems to me that sound would be much more useful to a bird in flight, or in a tree, because you may not be able to see one another!