0
votes
0answers
2 views

Is recombination suppressed in the males of all Drosophila species? Any other species?

Following up from this question, I am wondering if the phenomenon of genome-wide suppressed male recombination is limited to Drosophila melanogaster or is common to all Drosophila? The answer to the ...
2
votes
1answer
6 views

What Websites Have Image Libraries for Bacteria and other Microorganisms

What Websites Have Image Libraries for Bacteria and other Microorganisms? With age of cell phone microscopes and hand held spectrometers it would be interesting and valuable to be able to compare ...
0
votes
0answers
6 views

Is it correct to compute pairwise and multivariate correlations between gene expression values on log2 and heavily normalized data?

Is it correct to compute pairwise correlations between microarray expression values on log2 and heavily normalized data? In other words: should I normalize and standardize microarray data for ...
-1
votes
0answers
4 views

What software/approach to use to build a graph based on microarray gene expression correlation?

What software to use to build a graph based on microarray gene expression mutual correlation? I have tried Cytoscape`s Reactome FI and a recipe from R bioinformatics cookbook, however, need a more ...
2
votes
1answer
8 views

positive epitope fragment

What is a positive epitope fragment? I found this term in this paper: COBEpro: a novel system for predicting continuous B-cell epitopes by Michael J. Sweredoski and Pierre Baldi
-1
votes
1answer
21 views

why male penis not considered as cartilage?

Penis don't have bone like ears & nose, then why why male penis not considered as cartilage? en.wikipedia.org/wiki/Cartilage
2
votes
0answers
9 views

Controlling reflexes

If the reflex arc carries signals from receptor neurons in my fingertips and relays that information to an effector, how can this be overridden when picking up hot things like food which would ...
2
votes
1answer
38 views

Are boat-tailed grackles efficient flyers?

The boat-tailed grackle's deep-V tail would seem to cause a great deal of drag or even downward deflection (like an airplane's elevators). How much does this actually affect the bird's flight?
0
votes
0answers
22 views

Length of sleep time

Why do we wake up after 6-8 hours of sleep ? Why don't we sleep for lets say 20-30 hours ? What mechanism is it that controls when to wake us up and how does it determine the moment that we should ...
1
vote
1answer
17 views

Crossing white eyed Drosophila with sepia eye

So, I'm doing some drosophila experiments with my high schoolers and I had really poor production of wild type individuals for doing the experiment resulting in not enough to cross with everyone... I ...
1
vote
0answers
6 views

Gene expression for mouse feeder cells (inactivated MEFs)

I'm looking for a paper with gene expression data for mouse feeder cells, inactivated by gamma radiation or mitomycin C. Ideally I'd like RNA-seq data but I'll use microarray data if that's all there ...
2
votes
0answers
26 views

Is there tea allergy? [on hold]

In every day when I drink more tea than other drink I have to go to water closet more often than other days. Does it cause any allergy or any other reason behind it?
0
votes
0answers
21 views

Are there any conventional standarts to microarray experiments data representation to biomedical journals? [on hold]

Are there any conventional standards to microarray experiments data representation to biomedical journals and thesis committee? Should I save raw data or send them log and prenormalized data sets? Is ...
0
votes
0answers
12 views

What is the adequate rational approach and software to visualizing VCF genome comparison files? [on hold]

What is the adequate rational approach and software to visualizing VCF genome comparison files? Have >100 VCFs with errors from tuberculosis whole genome comparative research, need to filter files and ...
2
votes
1answer
22 views

How to retrieve full gene names list and Entrez gene IDs and other annotation information from HUGO gene name list (in R or any)?

How to retrieve full gene names and Entrez gene IDs and other annotation information from HUGO gene name list (in R or any other software or language)? Is it possible ice versa: having full gene ...
3
votes
2answers
51 views

What does units/mg mean for Streptavidin

I got streptavidin for surface reaction. The label says "biotin binding: 16 units/mg". What does units/mg mean? Does it mean "1 mg biotin can bind to 16 units ...
3
votes
1answer
45 views

What kinds of cells does human saliva contain?

I have heard that our saliva contains cells. What cell types can be found in human saliva?
0
votes
0answers
9 views

Swellings with Variegated consistency

I am interested in knowing the names of all swellings with variegated consistency. I have come across the following: Malignant swelling with partial necrosis Caseated tuberculous lymph nodes ...
1
vote
1answer
36 views

How does Haloxyfop control young grassy weeds in fields of broadleaved crops?

Haloxyfop (haloxyfop-P-methyl) is a selective herbicide used to control grassy weeds in young stages. The mode of action (iirc) is basically inhibition of acetyl CoA carboxylase (ACCase). Why does ...
3
votes
1answer
28 views

Are codons that map to the same amino acids interchangeable?

(disclaimer - I'm just getting interested in genetics so sorry if this is an obvious/silly question.) I see from http://en.wikipedia.org/wiki/Genetic_code in the section on the RNA codon table a ...
2
votes
0answers
16 views

What is the most complex biological organism (or precursors) that we have been able to synthesize from raw materials?

In the Miller–Urey experiment they produced several amino acids. I'm not sure if there were other similar experiments that got further. ...
1
vote
1answer
21 views

Dehydration from caffeine, alcohol and other

Tea, Coffee, Beer, Coke etc… I wonder if the benefit from amount of fluid we get from them is bigger or smaller then the handicap of dehydration. In other words it is worth to drink them if we want ...
-4
votes
1answer
42 views

Can genetic engineering be performed without a laboratory setting? [on hold]

I'm becoming more interested in genetic engineering as I learn more about it, and it's becoming more and more apparent that there's very few resources on genetic engineering at home. A similar ...
0
votes
0answers
16 views

Transfect Mammalian Cells with Single Stranded DNA?

Agrobacteria can deliver parts of their DNA to plant cells as T-DNA, transfer DNA. This DNA is delivered as a single strand and can be integrated into the plant genome or can be converted to a double ...
-1
votes
0answers
30 views

Genetic Code Question [on hold]

The following template strand contains codons encoding the beginning part of a polypeptide. Which of the following amino acids is the fourth amino acid found encoded from the beginning/start of the ...
-1
votes
0answers
16 views

A lifeform similar to known lifeforms, with one difference [on hold]

What would the feasibility be of a lifeform where sucrose serves the purpose of glucose, and what other differences might be necessary? Perhaps some way to get around spontaneous glycation issues?
0
votes
2answers
28 views

mRNA Transcription from Nuclear DNA

How does a cell "know" the coding strand vs. the non-coding strand of DNA during transcription of mRNA?
2
votes
1answer
36 views

How does menstruation proceed during one period?

I'm simplifying things here: A. Does a woman bleed constantly, like a drop every 10 minutes? Two hours without pad or tampon and your underwear is dirty? or B. Does a woman bleed suddenly a ...
2
votes
1answer
36 views

Dehydration by a tea, coffee, beer etc

For the long time I am trying to find out if the following is truth: They say that some beverages dehydrates. I heard that about tea (sometimes green, sometimes black, sometimes both), coffee, beer ...
5
votes
0answers
30 views

Non-harmful bacterial invasion of cells

There are bacteria that can enter body cells as parasites. Could it be that some of these are benign, such that the guest will not kill the host cell it lives in (in human)?
4
votes
0answers
26 views

How much total RNA can be extracted from Drosophila brain

I am wondering how much total RNA could be extracted from a single D. melanogaster brain. I could not find this information from the literature. The closest hit was this paper: ...
1
vote
0answers
10 views

More general usage of the term 'congener'

In taxonomy the term 'congener' refers to two species within the same genus. In more colloquial usage, it can refer to any two objects within the same category. Is there a way to refer to related ...
2
votes
1answer
23 views

Can an upper forearm amputee correctly control the Median and Ulnar nerves

I'm an engineer who is looking to build a robotic hand for people without their upper forearm(from center of forearm in direction of hand), controlled by the Thalmic Myo(an EMG sensor). I am first ...
-1
votes
0answers
18 views

Microscopic Organism [on hold]

I was looking under my microscope and saw this... I asking about the long organism with a circular head... I observed it moving and wanted to find out what this was. Thank You
4
votes
2answers
1k views

Is there an organism which has a common English name which overlaps with another organism's scientific name (or vice versa?)

Many organisms have their common names identical to their scientific names. For example, there exist apes of the genus Gorilla known commonly as gorillas, and plants of the genus Delphinium known as ...
4
votes
1answer
28 views

Plural of “dibamus”

Migrated from English site. Dibamus is a genus of legless lizards in the family Dibamidae, of the infraorder Dibamia. Genera are usually given in singular, so what is the correct plural of ...
2
votes
2answers
34 views

Conversion of glucose to glycogen

Why is excess glucose, as a glycogen, stored in only a limited amount as compared to the lipid in our body? Why is mature glycogen arranged (polymerized) in 12 tiers polymer?
1
vote
1answer
31 views

How was the origin of CTVT parasitic cancer determined?

The wikipedia article on CTVT says that the tumor cell has 57-64 chromosome while a normal dog has 78 chromosomes. Similarly while all chromosomes in dogs except the X and Y chromosomes are ...
-1
votes
0answers
39 views

What is it a swell in the body? [on hold]

When I get hurt, for example injuries to a bony part causes it to swell...like a little mountain. What is it actually? Does it happen in other places on the body?
-1
votes
0answers
26 views

Why Muscle Popups? [on hold]

I am a swimmer, I swim 6 times a week 3 hours every time. After almost every train when I get to absolute rest, my hand muscle popup... and just lately I have noticed that once in a while my ...
1
vote
2answers
37 views

What are the differences between a benign tumor and swelling?

What are the differences between a benign tumor and an injury related swelling? And can swellings due to injury turn into a benign tumor?
6
votes
1answer
564 views

Have there been studies done to test Immortality of Cancer Cells on culture?

The article here says cancer cells may be immortal. I am wondering if there has been any research done to find if cancer cells are really immortal. How old is the still maintained living oldest ...
3
votes
1answer
59 views

Are nutrients absorbed in human esophagus?

Following this question regarding absorption in human oral cavity (sadly not yet fully answered), I'm curious if any nutrient absorption occurs during the descent of food through the esophagus. And ...
2
votes
0answers
31 views

eradicating h.pylori naturally

This question is not to discuss whether substances with anti-h.pylori agents works or not, or the pros and cons of such but from a medical perspective. Assuming that one manage to control, reduce, or ...
4
votes
1answer
45 views

After how many generations descendant is not more related to ancestor, than to a random individual in an ancestral population?

Descendant of n generation has on average 1/2n DNA of ancestor. (For example children have 1/2 DNA of parents and 1/4 DNA of Grandparents, After 10 Generation 1/1024 DNA and after 100 Generations ...
4
votes
1answer
42 views

Why do the proportion of predators increase at mass extinction events?

Why does predation surge with mass extinction? It is caused by extreme selective pressures over resource competition that forces certain species to adapt to predatory niches?
3
votes
0answers
23 views

How long can a human neuron cell live outside the body in a controlled environment?

Have there any experiments been to keep neurons alive (stationary) without preserving methods such as freezing? If yes, for how long?
4
votes
1answer
28 views

Mechanism of Decorticate & Decerebrate Posturing? Also why is only Decorticate Rigidity a misnomer?

I read these two from various books, and got confused. The confusion is - Reticulospinal tracts control gamma motor neurons. Gamma motor neurons control tone of muscle. In decerebrate rigidity, the ...
0
votes
0answers
16 views

What are the practical techniques used for the assessment of blood for abnormalities? [on hold]

Any practical laboratory techniques used for the assessment of blood in hematological investigations?
3
votes
3answers
26 views

Kinetic Vs Potential Energy in Biochemical Contexts

This question is causing great confusion in my head. Which of the following is an example of potential rather than kinetic energy? A) the muscle contractions of a person mowing grass B) water ...

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