3
votes
1answer
30 views

Who compared developmental biology to crystallography?

I need to find out the name of a nineteenth century biologist who compared developmental biology to crystallography. His idea was that crystals are formed from 'cells' (defined molecular units) that ...
-4
votes
2answers
39 views

Why does a gene have two alleles? [closed]

Why does a gene have two alleles? When there is a gene for producing the color pigment for a flower, why are there there two alleles, producing either same color or different color (homozygous and ...
-4
votes
1answer
35 views
0
votes
1answer
35 views

Would a human survive eating only living ants?

After reading an admittedly foolish question about 1 googol ants vs. 1000 humans, I had a question. Could a human survive solely on eating ants (common ants, not the stinging kind, or leafcutters ...
1
vote
0answers
13 views

Why can't diamine oxidase be supplemented?

I've read that diamine oxidase cannot be supplemented from an academic article but it had no explanation as for why. I am curious as to why this? Article reference: ...
2
votes
2answers
58 views

Does “squinting” make you concentrate better on a logic test?

We have all had those moments of intense concentration on some tough exam, perhaps a college test or whatever... Why is it that when we squint, it feels like we can focus and concentrate better on ...
3
votes
2answers
33 views

Would a person live longer, if such a person lived in a planet with lower gravity? (say, Mars) [closed]

I was wondering: some companies plan to colonize Mars, many of us know. But if one were to live on Mars, would this person live longer? It seems to me that a lower gravity would mean less overall ...
1
vote
1answer
44 views

Can we change the direction of a neurological signal? [closed]

My question is can we change the direction of a neurological signal? When a neurological signal is generated it goes to the brain. Along the way it passes synapses. Can we make it change it's pathway ...
1
vote
1answer
35 views

Are these termites?

These are outside a window in Phoenix, Arizona. I looked on the internet for pictures and these guys looked very similar to winged termites.
3
votes
1answer
38 views

Are there journals for theoretical models of protein-protein interactions?

Are there respectable scientific journals for publishing models of protein-protein interactions obtained by docking simulations? I would also discuss the biological significance of the particular mode ...
2
votes
2answers
31 views

How do t-lymphocytes become mature if thymus has lost its function?

The development of t-lymphocytes are done by thymus and we also know that the thymus degenerates before puberty and we also know the maximum lifespan of WBC's is 15 days. So, how do t-lymphocytes ...
1
vote
0answers
21 views

Does anyone know what type of Cocoon is this?

I am really concerned with this since I've never seen a cocoon this color before and can't find it anywhere on the internet. I found it just laying on the ground not attached to anything, but it ...
0
votes
0answers
18 views

Identifying Bacteria

I have a symbiotic colony of bacteria and yeast (SCOBY) that I'm trying to identify. How would I go about determining what the bacteria is? I can do spectophotometry, thermocycling, gel ...
-1
votes
1answer
47 views

What are 'factors' in biology? [closed]

My question is what does the word 'factor' mean in words like transcription-factor or nerve growth-factor? What is similar between these different compounds such that they deserve the word 'factor' in ...
2
votes
0answers
24 views

Why does bacillus thuringiensis produce bt toxin?

Background : B.thuringiensis produces an inactive crystalline toxin during sporulation which when ingested by an insect, gets activated and causes pore formation in gut , subsequently leading to death ...
2
votes
1answer
28 views

Why are our bodies created to itch when histamine is released by our immune systems?

Why do bug bites and cuts itch when scratching them clearly doesn't help us survive? Did our early ancestors need to rely on this itching sensation, or is it just that the receptors for itches just ...
3
votes
1answer
50 views

Color vision across species

Is it true that color vision is sex-linked for all species with binary sexes? Is there an evolutionary significance to the fact that color vision is X-linked in humans? E.g., only female humans can be ...
1
vote
0answers
20 views

An obscure reference to a “golden vein” [migrated]

In some Yiddish literature there is reference to a 'golden vein' which seems to refer to Hemorrhoids. Is there any reason that hemorrhoids would be described as golden? Edit: In response to the ...
-1
votes
0answers
58 views

How to eliminate prairie dog colonies from a field? [duplicate]

I have several fields infested by gunnison prairie dogs. These things cause damage to the fields, irrigation system, livestock, and spread disease. For years, I've invited neighbors/friends to come ...
2
votes
1answer
29 views

Can anyone Id this flower?

Small pink flower, started out as tiny buds, leaves look almost like Maple leaves..
1
vote
0answers
10 views

Isotretinoin and retinoid receptors in brain confusion?

I am considering starting a treatment with Accutane(Isotretinoin), however I am not sure about what the effects on the brain are. Here are two studies that contradict each other: ...
0
votes
0answers
10 views

Dogs “covering” their Urine/Feces Indoors [migrated]

How can I stop my 7 yr old mini schnauzer/yorkie from covering/burying his urine and/or feces when he relieves himself indoors on a pee-pad? I don't mind him going indoors on the pad and he always ...
2
votes
0answers
13 views

Peculiarity of chemo senses [closed]

We can easily recall our visual stimulus and auditory stimulus but why can't we recall chemical stimulus like smell and pain? We can recall a song or picture but we can't exactly recall smell and ...
0
votes
3answers
47 views

Sense and anti sense strand

Why the sense strand is only involved in transcription though the antisense strand just has the compliment strand of the sense strand?
18
votes
1answer
920 views

Can beavers control the direction a tree falls?

We humans can easily control the direction a tree falls by making a number of strategic cuts, essentially creating a hinge: This prevents trees from falling on equipment and people and sets them up ...
3
votes
1answer
25 views

Sex biased gene expression in the X chromosome

It has been shown that the X chromosome is frequently enriched for female biased genes, and has a deficit of male biased genes. For example in this paper, and this one. However, I'm struggling to ...
3
votes
1answer
31 views

Is MHC1 knockout sufficient to prevent transplant rejection?

A few days ago I read about MHC1 knockout pigs for organ transplantation research. I was just wondering, is it enough to knock out MHC1 in the donor (lets say from same species, pig to pig) for ...
1
vote
1answer
40 views

Are grasshoppers monogamous?

Noticed two grasshoppers jumping together on the porch, and started wondering if they are monogamous? I am aware they have males and females.
2
votes
1answer
30 views

What happens to IP3 molecules after release from IP3 receptors?

IP3 molecules bind to IP3 receptors and open up the calcium channels on the endoplasmic reticulum. I am wondering what happens to IP3 molecules after they have been released from the IP3 receptor? Do ...
2
votes
1answer
29 views

DNA dependent RNA polymerase

How does a RNAP locate a specific gene? For instance, growth hormone has to be produced and the RNAP has to locate the gene. But the promoter (TATA box) will also be present infront of all cistrons. ...
1
vote
0answers
32 views

Can I explain the kinetics of a ligand looking at the ligand-protein co-structure?

Can I explain the kinetics of a ligand binding to a target protein (association and dissociation rates) by looking at the protein-ligand co-structure? Editing my question after a few comments: I ...
7
votes
2answers
119 views

What are some (bioinformatic) methods to characterize potentially novel gene transcripts?

I am working with a few novel transcripts of genes- before I confirm their existence experimentally, I would like to perform some bioinformatic analysis. I have already considered coding potential, ...
1
vote
0answers
20 views

why not classify organisms based on genetic distance? [duplicate]

When learning about "families of animals" in mid-primary school, my son asked me if there is not a better way to classify animals than by looking at them (they were taught that animals are grouped ...
0
votes
1answer
26 views

C Form DNA Base Pairs Per Turn

How does C-DNA have 9.33 base pairs per turn? The number of base pairs should be quantised. How can it be a decimal?
2
votes
0answers
52 views

What is the name of this tree? [duplicate]

I noticed this plant growing on the Azores islands. It has a surprisingly perfect distribution of branches, which gives it the appearance of a fake decorative plant. Does anybody know what type of ...
1
vote
0answers
38 views

Random small after-images of things not really there [closed]

I am 44 years old and have noticed that I often get small blotch afterimages that last for about 5-10 mins. Normally, everybody gets these when they look at a bright light. I seem to get these every ...
14
votes
2answers
1k views

How to make a fake auditory signal?

My question is about making fake auditory signals. The ear collects sounds from the environment, which are transformed into a neural signal by the hair cells in the inner ear. This signal is sent ...
3
votes
1answer
53 views

What are the most important factors influencing a person’s gut microbes?

You are your bacteria! The probiotics and the antibiotics... There has been on going discussions about how our gut bacteria is important for a healthy lifestyle. Figure 1: Schematic diagram ...
1
vote
0answers
22 views

Which pathway visualization software can I mouse-over the name to view molecular structure? [closed]

As the title implies, I'm looking to use a single pathway visualization program to learn pathways. All that I can find, like wikipathways, only show the names of the molecules, with an option to click ...
1
vote
0answers
11 views

Which anti-fungal compounds effective against Grosmannia clavigera?

Grosmannia clavigera ("Blue Stain Fungus") is the fungus introduced by Dendroctonus ponderosae ("Mountain Pine Beetle") when they infest their host (several species of Pinus). Are there any known ...
5
votes
1answer
55 views

Where do most mutations come from, mitosis or meiosis?

According to this (old) paper there are 10 times more mutations during meiosis than during mitosis. One reason for that is that recombination often causes replication error and therefore mutations. ...
0
votes
2answers
88 views

What are the programming languages important to learn for a geneticist or bioinformatician? [closed]

I am interested in learning more about both genomics and bioinformatics, with emphasis on genomics. I was told after taking an introductory course of genomics that the programming language "R" and ...
6
votes
1answer
65 views

What are these tiny dark red insects?

I found these creatures stuck to a leaf on my tomato plant in the greenhouse/glasshouse, in early June, in south Oxfordshire in the United Kingdom. They are each about 1-2mm in size. They didn't move ...
1
vote
0answers
17 views

Differences in structural target for LPS detection by LAL and MD-2/TLR4

I remember there being a significant difference in the pathogen-associated molecular patterns (PAMPs) used for detection of lipopolysaccharide (LPS) by mammalian cells and the Limulus amoebocyte ...
3
votes
0answers
34 views

Can two members of the same sex have a biological baby? [duplicate]

I imagine that this would work using a similar technique to dolly the sheep. For two females, the nucleus of an egg would be placed in a sperm which has had its nucleus removed. The 'female' sperm ...
0
votes
0answers
40 views

How calorie intake affects weight gain?

There are ton's of textbooks and websites that say that if you want to gain weight you have to increase your calorie intake. My question is how is it possible for a body to take in more calorie than ...
5
votes
0answers
63 views

How to fix a small pond that has become stagnant? [migrated]

I'm working in a park and we have a small pond a part of a river system that has become stagnant, mucky and smelly. The river that previously ran into the pond is no longer there and we'd like to be ...
2
votes
3answers
103 views

Blood urea nitrogen and usage of proteins?

I have been reading some books and am getting slightly confused. Here is roughly what I have read. The greater the blood urea nitrogen the greater the usage of proteins (since blood urea nitrogen ...
1
vote
1answer
37 views

Hodgin-Huxley model for a single neuron - continuation

As continuation to This question I have posted. Another set of questions is given for the same model : This time it is also given that for $t<0$ the membrane potential is $u_0$, and at $t=0$ it ...
2
votes
1answer
40 views

Extract protein sequences from a GBK(GenBank) file without scripting [closed]

How to extract protein sequences from a GBK(GenBank) file without scripting? I know that writting a script using BioPerl or Biopython can do this, but it is not elegant and daunting to beginners and ...

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