Biology Weekly Newsletter

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Top new questions this week:

Does DNA have the equivalent of IF-statements, WHILE loops, or function calls? How about GOTO?

Does DNA have anything like IF-statements, GOTO-jumps, or WHILE loops? In software development, these constructs have the following functions: IF-statements: An IF statement executes the code in a ...

dna bioinformatics systems-biology  
asked by coderworks 41 votes
answered by WYSIWYG 38 votes

How Do White Blood Cells Learn? Or Do They?

So I get the concept that a vaccine is a weakened form of a virus so that the body can "learn" to fight it and make a person immune to that disease, but how exactly does this learning take place? What ...

immunology  
asked by CodeMonkey 14 votes
answered by The Nightman 15 votes

Are there cats with black skin?

Some mammals can have a black, pink or spotted skin, depending on race - see for example humans or pigs. But I recently learned that this is not the case with mice. Even black furred mice have pink ...

zoology pigmentation  
asked by rumtscho 13 votes
answered by anongoodnurse 15 votes

Why vaccines do not cause bacterial resistance?

Since bacteria can evolve to overcome antibiotic use, why wouldn't be able to evolve to overcome antibody or cell-mediated immunity? Thanks One possible explanation: antibiotics have only one target ...

bacteriology vaccination  
asked by Biotechnologist 8 votes
answered by Corvus 8 votes

What will happen if a scorpion pierces itself?

If a scorpion pierces itself, will it die or immune to its poison? If it produces the venom its blood should be immune to itself poison.

zoology poison  
asked by blackcornail 6 votes

Are all dinosaur bones radioactive?

I watching some TV program some time ago and a guy in it mentioned that when-ever museums display real dinosaur bones (as opposed to a replica) the bones are painted over with a lead paint, because ...

palaeontology  
asked by coderworks 5 votes
answered by Chris 7 votes

Why do some vaccines last longer than others?

After reading an answer to the question of How Do White Blood Cells Learn? Or Do They?, I came to wonder something. Specifically, The effect of this is that every new B and T cell that your bone ...

immunology vaccination  
asked by Eric 4 votes
answered by poka.nandor -1 votes

Greatest hits from previous weeks:

What's the maximum and minimum temperature a human can survive?

This is a question that has been in my mind since I was a kid. I'm not a doctor, nor even a biology student, just a curious person. What is the minimum and maximum temperature a human body can stand ...

human-biology physiology temperature  
asked by Bugster 29 votes
answered by Rory M 20 votes

Why do mammalian red blood cells lack a nucleus?

How did the red blood cell in humans get to lose its nucleus (and other organelles)? Does the bone marrow just not put the nucleus in, or is it stripped out at some stage in the construction of the ...

human-biology hematology  
asked by John Smith 19 votes
answered by EdoDodo 21 votes

Can you answer these?

Degree of dosage compensation in Drosophila melanogaster

In this paper the authors state that the dosage compensation seen in Drosophila is approximately twofold, but they do not provide any source or numbers (as far as I can see) for this. What is the mean ...

genomics genomes drosophila dosage-compensation  
asked by GriffinEvo 2 votes

How we share pain?

When somebody else tells me about his or her itching or pain in some specific body part I sometimes begin to feel similar feelings. I can think of about three explanations: I feel pain all over my ...

neuroscience psychology pain cognition  
asked by Probably 3 votes

Sensitivity of eyes to flashing lights

My eyes are very sensitive to flashing lights - for example I'm always the first person to notice that a fluorescent tube is about to fail because I see it flickering when other people can't. When ...

eyes vision human-eye  
asked by Lefty 2 votes
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