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Mar
23
comment Genes-of-interest analysis between organisms
@AliceD RNA-seq is a gene expression profiling technique akin to microarrays. The sequencing step is just a technical detail.
Feb
13
awarded  Good Answer
Feb
7
comment Why cancer is not a communicable disease?
@Kendall I have to admit that I don’t know anything about that, but please feel free to add your own answer and/or edit mine. Also, thanks for this interesting piece information, I didn’t know that.
Feb
7
comment Why cancer is not a communicable disease?
@GoodGravy No, it’s not a moot point at all, because it doesn’t explain why cancers generally aren’t transmissible, and that was the whole question. (I also disagree with your edit, since it changed the answer substantially, and such edits are frowned upon on Stack Exchange – you should have written your own answer instead.)
Feb
7
comment How do I find a protein from this DNA sequence?
Translation would fail on this sequence since it’s not a complete open reading frame (doesn’t start with a start codon, doesn’t stop with a stop codon, and length not divisible by three). As such, we don’t even know whether it’s in frame, or maybe shifted by a nucleotide.
Feb
7
answered Why cancer is not a communicable disease?
Feb
7
comment Why cancer is not a communicable disease?
I’m unhappy with this answer, and although I haven’t downvoted it, let me try explaining why it was downvoted. First of all, as you note yourself later on, your initial sentence is simply wrong: many cancers are caused by infectious agents. More importantly though, your premise is fundamentally flawed: again, as you show yourself, cancer itself is an infectious agent (ever heard of metastases?). So why, then, is it usually not transmissible between individuals? Your answer doesn’t explain that at all.
Jan
21
comment What were the first neural systems like?
@ChrisStronks We know tons about evolution that isn't preserved at all in the fossil record. For instance, we can study evolutionary model organisms and do comparative genomics. In fact, fossils play a fairly minor role in the modern study of evolution.
Dec
26
revised How do trees manage to grow equally in all directions?
added 68 characters in body
Dec
18
awarded  Yearling
Oct
24
awarded  Enlightened
Oct
15
awarded  Nice Answer
Sep
7
awarded  Nice Answer
Jul
2
comment Did animals evolve from plants?
@KeithThompson Indeed, it does have these implications: There are potential hard-to-cross thresholds to higher life forms, which prevents their abundance in the Universe (and may help explain the Fermi paradox), but evolution of multicellularity is not one of them.
Jul
2
comment Did animals evolve from plants?
@Keith Ha! Actually, “Multicellularity has evolved independently at least 46 times …
May
12
awarded  Nice Answer
Apr
12
awarded  Nice Answer
Mar
23
comment How did the first sexual animal come to exist?
Actually your text already convinced me, concerning the number of times sex evolved (hence the edit).
Mar
23
comment How did the first sexual animal come to exist?
I’m not sure I would agree with “no brainer”. As far as I know, sexuality has only evolved once. Also, could you expand a bit on the heterogamy argument? In particular, wouldn’t the same apply to plasmids? Yet we don’t see anything particularly resembling sexual selection emerge from that. /EDIT: Your answer might actually contradict my first assertion (I should have read the full post first) – I’m still interested in an answer to the second.
Mar
23
comment How did the first sexual animal come to exist?
I’ve had to edit your answer, “just one theory” sounds a bit too similar to the “just a theory” creationist canard for comfort. I’m wary that it might feed the common misconceptions about what makes a scientific theory.