4
votes
0answers
68 views

Will eukaryotic RNA fold in the same way in prokaryotes?

As far as I know, there are no specific eukaryotic or prokaryotic factors that aid in RNA folding other than cellular environment (salt and ion concentrations, dissolved molecules, etc). Are there any ...
0
votes
1answer
519 views

Writing methods section on PCR amplication in a paper

Considering that I am writing a paper for a journal, could the following phrase be understood? or should I put the 'step-by-step' way by giving numbers? PCR Amplification and sequencing PCR ...
16
votes
3answers
1k views

Do animals exist with an uneven total number of digits?

I recently finished reading Contact by Carl Sagan. In the book they talk about a pattern in the transcendental number like pi or e, and comment that it is found in base 10 or however many fingers the ...
3
votes
1answer
533 views

What does phasing mean?

What does phasing mean in genetics/informatics? I've heard that a phased file is a file that has genes separated by chromosome, but can someone give a concrete definition of what phasing actually ...
0
votes
2answers
72 views

Plant anatomy, what are these stem like filaments growing under the flower

The picture below shows what I am talking about. Each flower has one and I am just wondering what they are?
1
vote
2answers
183 views

What gases are needed for humans to breathe?

I will be beginning a science project about sustaining life on space stations. I already know that pure oxygen is harmful for humans but would $O_2$ + $CO_2$ be enough for humans to breathe in or do ...
1
vote
1answer
66 views

Information Gene HBA2

Gene : HBA2? hemoglobin alpha 2 (Homo sapiens) I don't find any tissues (or organs) in which the expression of this gene is strongest? What is the size of the gene (promoter off) encoding this ...
2
votes
1answer
124 views

Any tool to align whole genome sequence data to another genome and give exon regions a higher mark?

I want to align WGS data from several mammals to one reference such as the human genome sequence. Since in most cases exons should be conserved and spliced in the same way and introns should vary, I ...
5
votes
2answers
232 views

How to find Exons in mRNA Computationally

I'm having trouble finding a method to find exons in the original DNA sequence used to create the mRNA, even given the sequence of the mRNA, as I cannot find a way to reliably identify the beginning ...
2
votes
1answer
76 views

What is this plant in the Butler, Pennsylvania area?

This is growing in the woods near my house in the Butler, Pennsylvania area. I have not seen it around before and I have no idea what is it. What is it? Is it poisonous to pets (or little kids)?
2
votes
1answer
58 views

How can I accurately predict proper transgenic protein function/structure from different species?

I am currently building a synthetic system in E.coli, and am often faced with the need to use genes from other distant prokaryotes. I know that myself and most of my colleagues resort to an educated ...
2
votes
2answers
121 views

Prenatal Marketing

This is for a short story idea. Is it possible to modify the DNA of a child to make their metabolism more susceptible (physical response, addiction, etc) to a certain type of chemical i.e. a chemical ...
5
votes
4answers
346 views

Are there animals which can see movements better than shapes or colors?

I remember that in Michael Crichton's novel Jurassic Park, Tyrannosaurus Rex was supposed to have movement based vision. (Of course, that is a novel and not a scientific text.) I have also noticed ...
16
votes
5answers
6k views

Does red light preserve your night vision?

A number of companies have started marketing LED lamps that can be switched to a red mode. The claim is that red light is less harmful to one's night vision. Given that our eyes are less sensitive to ...
0
votes
1answer
30 views

Information and image of Genus Acesina

I am searching for image and information, like distribution etc of the genus Acesina. The Taxonomic tree is: ...
9
votes
1answer
165 views

Doesn't osmosis violate the law of conservation of energy?

Osmosis seems very counter-intuitive to me. I will try to explain my doubt with the following thought experiment: Consider a huge container divided into two by a semi-permeable membrane. We add equal ...
0
votes
1answer
151 views

Why not use SDS-PAGE as a method to detect viruses?

Recently, I have been researching about DNA and I know the most popular method for detecting viruses is based on DNA. After learning about proteins, I wonder why we do not detect viruses based on ...
2
votes
2answers
144 views

How to learn biomathematics?

I'm currently an undergraduate math student and researching on the internet I discover that exists an area called "biomathematics". Looks so interesting. They use the graph theory and topology to ...
3
votes
2answers
68 views

Why don't we form immunity to some infections?

I read another question, and its answers, about how vaccines work, but I don't see there, and and don't understand, why some infections can, seemingly, not be immunized against at all. For example, ...
0
votes
2answers
108 views

Problem on finding sequence of Taq polymerase

As i know, Taq Polymerase can be found in Thermus aquaticus, so i do a search for protein list of Thermus aquaticus and have this : http://www.ncbi.nlm.nih.gov/genome/proteins/1724?project_id=55053 . ...
5
votes
1answer
60 views

Diabetes-diabetes comorbidity

Is it possible to have both type-1 (insulin-dependent) and type-2 (non-insulin-dependent) diabetes mellitus? That is, to have both insulin resistance and zero (or negligible) insulin production? If ...
2
votes
2answers
318 views

Beginning with centrifuge experiment

This is the first time I do a centrifuge experiment with my own centrifuge machine, it's just simple made by a rotor that can rotate the tube at high speed. As I know a centrifuge machine can be using ...
1
vote
2answers
115 views

Finding a easy and cheap method for dyeing dNTP

I want to measure OD to know the concentration of dNTP. Any idea for dyeing dNTP at cheapest price and easiest way ?
1
vote
1answer
105 views

Preparation of normal DNA polymerase

i don't need Taq polymerase. Just need normal DNA polymerase. So the main idea is preparation polymerase directly from Lactobacillus without using cloned vector. My idea is electrophoresis using ...
0
votes
6answers
2k views

What does “fit” mean in “survival of the fittest”? [closed]

What does "fit" mean in "survival of the fittest"?
6
votes
1answer
134 views

Could someone recommend a book for surveying species?

I'm trying to get/renew basic knowledge of species. Could someone recommend a book for surveying "important"/"representational" species? I am looking for a book with good illustrations and that covers ...
1
vote
1answer
35 views

Do toxin producing strains of E. coli constantly produce toxin or only under certain conditions?

Background E. coli is prevalent everywhere but only some strains produce toxins harmful to humans, such as E. coli O157:H7. Questions 1) Would anyone know if these strains are always producing ...
3
votes
2answers
412 views

Why does the body not recycle red blood cells?

This question is out of curiosity. The life expectancy of a red blood cell (RBC) is approximately 3 months, and then RBCs are disposed of. Why does the body opt to build new red blood cells rather ...
0
votes
1answer
207 views

How does hair grow and is it similar to how grass grows?

If I recall correctly, nails (finger nails or toe nails) grow by adding matter at its base. So for instance, if you would draw a dot at the very bottom of your nail, it would end at the top in a ...
2
votes
1answer
120 views

How are memories stored in the brain?

I've been thinking about this for a while and I can't figure out how a memory can be stored in the brain. I understand that important memories are favourably retained, such as a near death ...
-1
votes
3answers
73 views

Are there “multi-frequency” signals within a human brain?

I know that neurons can exhibit tonic and phasic firing, and also that a neuron is sometimes called an integrator. This makes me interested to know if there are activities in the brain that depend on ...
0
votes
2answers
117 views

Is Hydrogen gas present in biogas, and does it spontaneously ignite?

Is Hydrogen gas present in biogas? As it is highly inflammable, may it ignite the other gases like methane?
2
votes
0answers
107 views

Good poly-A filtering rules or tools

I am aligning a large number of ESTs. It seems poly-A tails show in many different ways. In addition to occurring at the very end, they can be flanked by the cloning sequence one one end, or have ...
0
votes
2answers
117 views

What do you call the non-Wild Type allele?

Can I have a list of suggestions, such as the mutated allele, other allele, etc. ? Are there any blatantly missing ones on my short list?
2
votes
2answers
179 views

A source for leaf architecture of different plant species/genus?

I'm currently working on extracting some features of the leaf architecture based on their images (like L:W ratio, laminar shape, ...). I use the Manual of Leaf Architecture as the reference. It is ...
2
votes
0answers
142 views

Can Pfx polymerase add only one 3' A overhang?

I am trying to clone a PCR product that was amplified using Pfx polymerase into pGemT vector. I had to A-tail the PCR product using Taq polymerase since Pfx only generates blunt end products. My ...
7
votes
2answers
313 views

Why do many fruit trees have five-petaled flowers?

Peach, pear, apple, cherry, and many other fruit trees seem to have flowers comprised of five petals. Assuming there is no evolutionary advantage to confusing students of trees, is there a plausible ...
2
votes
1answer
73 views

Does this patient have HHV6 or HCMV after transplant surgery?

I have been given mock results from a PCR test on blood samples taken from kidney recipient patients and their donors. The PCR reaction can detect single copies of viral DNA. I have been asked to ...
1
vote
1answer
37 views

How can I learn about how cloning works in nature (twins)?

I would like to learn about how the process of cloning works in nature - how are twins "created" after fertilization what genetic changes can occur in each of the twins. Where should I start? What ...
1
vote
1answer
205 views

Approximately how thick is a single strand of cat (domestic housecat) hair?

I did a little research to lead me to finding the general range of width for human hair, which is anywhere from around 30µm to 180µm... approximately. I'm trying to compare this to the width of cat ...
1
vote
1answer
99 views

In the context of twin studies, what do 'unique environmental factors' and 'shared environmental factors' refer to?

I was reading this study on sexual behavior and they refer to both terms without clarification. Does 'unique environmental factors' refer only to the prenatal environment or does it include individual ...
4
votes
1answer
137 views

Who would win in a fight: an amoeba or a leukocyte?

(sorry, I couldn't resist the rhyming, silly title) I find it facinating that humans can suffer from an amoeba infestation. Amoeba must reproduce far more slowly than bacteria. In size, they seem to ...
3
votes
0answers
59 views

Iron metabolism in the brain

I did an expression profiling from publicly available RNAseq data for mouse tissues. While for liver and testes I am getting expected proteins in the top highly expressed mRNAs, for brain I am getting ...
2
votes
2answers
86 views

What causes autism?

What causes autism? By this I don't mean what is to blame i.e. Vaccines, Gluten or Pharmaceuticals etc.. I mean what exactly is happening in the brain to cause the autistic behaviors such as little ...
24
votes
5answers
778 views

Why do we age? or Do we have a theory of senescence?

There seem to be a number of ideas about why we age. Hypotheses include the gradual accumulation of cell metabolic products affecting organism function and the reduction of telomere length during cell ...
1
vote
0answers
36 views

Functional modules in viruses

I am interested in protein function within viruses, especially on how they work together. Is there any study about grouping proteins in viruses as functional modules?
2
votes
0answers
92 views

Coiling of chromatids during cell division

What is exactly coiling of chromosomes? I just heard about the names i.e paranemic, plectonemic, orthostichious, anorthospiral. I have ecaxtly no idea of what phenomenon is this. Also what type of ...
1
vote
1answer
17 views

Preventing Diabetes by preventing stress?

I have came to know that taking a lot of stress increases the risk of Diabetes, and patients of Diabetes are adviced not to take too much stress, am i correct? if yes then I am unable to understand ...
4
votes
2answers
522 views

How does ubiquitin recognize misfolded proteins?

Misfolded proteins are tagged by ubiquitin and then are destroyed by proteasomes. How does ubiquitin know which protein to tag?
3
votes
2answers
78 views

How does the DNA know which chain has error in repairing?

As we know, the DNA has more stability than RNA, if one chain has broken or accidentally distorted, it can be repaired by the other one. Suppose there is a segment AGTC, its peer is GACT. Now its ...

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