0
votes
0answers
1 view

Marker validation using transcriptome and genomic sequences derived from a single cell

I conducted a SSR marker analysis using bioinformatic tool on some RNA-seq data of human tissues. Now, my supervisor believed that we have to validate theses SSR on a transcriptomics and genomic ...
4
votes
1answer
54 views

Case study and speculations on the brain of Edward Mordake

I am very interested in the case of the man named Edward Mordake who lived in the 19th century. In particular, he had two faces. If you have not heard of this man, please, search this up as there are ...
1
vote
0answers
5 views

Why is 2 sexes in an organism so common? [duplicate]

Sorry if this is a super simple question, but why do a lot of species have only 2 sexes? Some species just have 1 sex, but I've never heard of an organism having 3 sexes, for example. 3 sexes seems ...
3
votes
1answer
15 views

Can sexual selection operate in temperature dependent sex determining organisms?

Or more broadly, are distinct forms of genetic inheritance (ie. sex chromosomes) needed for sexual selection? My thinking was that since there are no sex determining loci, there could not be linkage ...
-1
votes
0answers
10 views

Does anyone have some references on using metal halide lamps in a greenhouse? [migrated]

I am looking for some references to use Metal Halide Lamp in green house. Is there some one can recommend me the specification (also the function), brand and the supplier (if possible)?. Many thanks ...
9
votes
2answers
163 views

Should we induce fever to assist healing?

I am currently reading "The Fundamentals of Anatomy Physiology" 10th edition, and have found it an incredibly interesting book. I have just been reading about the lymphatic system, and the various ...
2
votes
0answers
45 views

Can flow cytometric analysis differentiate between a parent contributing longer chromosomes versus multiple smaller chromosomes? [on hold]

Given 2 closely related flowering plant species A and B in a natural contact zone where the number of chromosomes is unknown for both species assume using flow cytometry using PI staining we know the ...
1
vote
0answers
5 views

What is pQTL and why do we need eQTL?

eQTLs are genomic loci that contribute to variation in expression levels of mRNAs (wikipedia). There is data out there that shows that ~60% of the time, the amount of mRNA in a cell is directly ...
0
votes
1answer
15 views

genes map to eQTL/pQTL

Of the 192 target genes, 79 map to a significant eQTL or pQTL in at least one dietary condition. is the line for a paper "Multilayered Genetic and Omics Dissection of Mitochondrial Activity in ...
0
votes
2answers
23 views

What would happen if most the fat in your body was rapidly converted into energy in 2 minutes? [on hold]

It all started out as an argument I had with my friend.He said that "it would be the equivalent of catching a fire and burning" But all I thought would happen is that you would now be very hyper ...
1
vote
1answer
22 views

How to validate the use of an anti-virus monoclonal antibody in IHC by spiking a fresh organ with infected cultured cells?

I have assessed the specificity of a particular monoclonal antibody against a virus by immunofluorescence. I'd like to further validate it by testing it by IHC. Therefore I'd like to infect cells in ...
1
vote
1answer
20 views

How do we call a region of low carrying capacity?

I am looking for a convenient word to define a zone of low carrying capacity surrounded by zones of high carrying capacity. The species is still present in this zone. How would you call such area?
0
votes
0answers
16 views

Do we all dream “every” night?

I had an argument with my brother and he claims that he doesn't dream every night ie when he dreams he always remember and if not he hadn't dreamt at all. I'm under the impression that all humans ...
3
votes
3answers
81 views

What is a good source that will help me classify protists?

I am a 15 year old that enjoys looking at the micro world. The only issue that I have is that I can't find a good online source that will help me classify the name of the micro organism that I'm ...
1
vote
0answers
18 views

What neuro-motor diseases cause the lower esophageal sphincter (LES) to malfunction?

Please note: This question is neither homework nor seeking medical advice. I'm simply asking for a factual, objective, biological explanation of the various neuro-motor diseases/illnesses that can act ...
0
votes
0answers
6 views

Size of the glycan chain in a glycosylated protein

I would like to know where I can found the (experimental/estimated) distribution of glycans sizes attached to proteins.
-2
votes
0answers
9 views

Why do we stop growing even if our cells continue to divide? [on hold]

Why do we stop growing after a certain age while our cells are still dividing?
0
votes
1answer
14 views

How do plants get carbon?

How do plants get carbon? From air or soil? How is it different for aquatic plants and algae? According to https://en.wikipedia.org/wiki/Soil_organic_matter soil has 3.3 times the size of the ...
-3
votes
0answers
9 views

How does the SA node self excites itself? [on hold]

It is written in my book that SA node is self excitatory in nature ? How does it self excites itself ?
3
votes
2answers
151 views

Is it possible to pet/groom birds?

I wonder if it's possible to pet a domestic crow, or an owl. Do birds respond to grooming as cats or dogs, for example? If so, then how does one pet a bird?
0
votes
0answers
10 views

Nicotine and plants [duplicate]

I hear that nicotine, produced by Nicotiana tabacum, is poisonous to the plant itself, which is why it accumulates the nicotine in the central cell vacuole. If so, why is nicotine produced in the ...
0
votes
0answers
8 views

How do non-dimorphic birds distinguish sex of possible partners/rivals?

Some birds, such as my pet Pionus chalcopterus, are not sexually dimorphic. People can't tell them apart, and even trained avian vets are not 100% certain with an inspection probing the vent. I ...
-1
votes
0answers
10 views

Effect of cytokines on dengue virus [on hold]

I want to know what sort of effect the following cytokines would have on dengue virus: IL-1β, IL-10, PAF, S1P, and TNF-α. 1) What sort interactions do they have? That is how one cytokine ...
-1
votes
0answers
13 views

Have you tried to setup a simple lab at home? [on hold]

I'm wondering if anyone has tried this? If yes, How big of space did you use and what equipments did you buy, at what price and where from?
0
votes
0answers
11 views

Proteins denaturation and natural selections

Which are the advantages, in terms of natural selection, of the denaturation of the proteins during the food preparation? Or in other terms, is it more important the reductions of bacteria in the food ...
1
vote
1answer
11 views

What is the “leaky valve” between the esophagus and stomach?

When someone talks about there being a "leaky valve" between the esophagus and the stomach, what is the exact biological structure they are talking about? This would be a structure that, when ...
1
vote
2answers
21 views

What exactly is extreme heterozygosity and how does it work?

Of course, I know in reference to apples. I also understand homozygous diploid pairs, like pp or PP, and heterozygous pairs like pP and Pp, and hetero/homozygous dominance and recession all that good ...
4
votes
1answer
19 views

How long is saliva viable?

Does anyone know if saliva can stay viable for about 5 days, before it gets suspended into a DNA genealogy vial for testing? Background: My brother wants to do a DNA genealogy test at a US testing ...
9
votes
2answers
2k views

Do birds emit infrared?

I'm an electronics engineering student and I am going to use a sensor that detects infrared emitted by birds that invade rice paddies. My question is: Do birds emit infrared radiation? I know that ...
2
votes
1answer
54 views

Why does all life use the same macromolecules in their genetic code?

There is no biochemical constraint of any sort, so why doesn't some other code work? Why is it specifically RNA/DNA?
0
votes
0answers
11 views

Are multi-chain proteins synthesized as one biological unit?

Are multi-chain proteins (especially homo/hetero-dimers) synthesized together as one overall unit or are they separate monomers which bind together at some point after synthesis, and are there any ...
6
votes
1answer
65 views

Some sort of Lymantriidae caterpillar?

I found this larva in Sweden in July. It was about 15 mm long. It reminded me of Orgyia antiqua that I've seen before, but smaller and with a somewhat different colouration.
1
vote
0answers
15 views

Why perform imputation?

Genetics datasets contain measurements for millions of single nucleotide polymorphisms (SNPs). Some (usually small) percentage of these values are of low confidence, and are labeled as missing values. ...
4
votes
2answers
37 views

How do birds avoid mid-air collision?

Across from me there is a large flick of Pigeons and Ravens that like to nest on the roof. They swoop and dive and fly all over. Sometimes the whole flock lifts off at once. My question is, how do ...
4
votes
1answer
55 views

Why does a wound itch while it's healing?

During healing of wound (almost in final stage) it begins to itch a lot around wound. I wondering what the reason for this is?
2
votes
1answer
34 views

Do the enzymes and compounds in saliva help with stain removal?

Does spitting on stains help with removal? Saliva is high in amylase that should help with the breakdown of protein rich stains like blood and semen. It also contains antimicrobial enzymes and ...
0
votes
0answers
5 views

Cure for high anti TPO levels to attain pregnancy successfully [migrated]

Can a person with high anti tpo levels be treated to have successful pregnancy ? Does intralipid infusion help in this process ? Does prednisone help in this process ?
2
votes
0answers
20 views

Can mutation rate be increased for instance by mutagenesis targeting the DNA polymerase?

I am studying a non-cultivable bacterium living in an insect host, and I would like to generate some random mutants of this bacteria while preserving the insect. I am wondering if one way to do so ...
1
vote
0answers
7 views

What are the differences and similarities between fimbriae and adhesins in microbes adherence factor?

Adherence factors in microbes is to attach to a host cell or to an extracellular matrix. So what is the difference and similarities between fimbriae and adhesins?
2
votes
1answer
25 views

Differential gene expression analysis between species

I have RNA Seq data from mouse and human skin ( 2 replicates each) and want to compare the expression of the orthologous genes to find any which are differentially expressed. I have quantile ...
10
votes
2answers
620 views

Why are potassium channels slower than sodium channels?

I am relatively new in the subject of biology. I have a strong mathematical background and in order to get into the field of computational neuroscience, I am trying to get some biological background. ...
3
votes
1answer
238 views

hummingbird feeders - is sugar water healthy for them?

The top results on google for DIY hummingbird feeder suggest a white-sugar solution for the feed. In humans we make a big deal about processed sugar vs. the sugar you get from, say, eating a piece of ...
-4
votes
1answer
24 views

I need a precise antigen definition [on hold]

I am confused about the precise definition of an antigen. Does antigen refer to just the "marker" proteins on the surface of pathogens or the entire pathogen?
2
votes
1answer
23 views

Staining cells for FACS at 4 degrees or ambient temperature

I'm sorting a 293 derived line. One thing that is worrisome for me is cell viability after the sort. Usually I have been staining and washing at room temperature (on the benchtop) on a nutator. I have ...
5
votes
2answers
402 views

Why can humans feel electricity?

What evolutionary process has provided humans with the ability of feeling electric current? Besides lightning and electric eel, what natural hazards include electricity that poses a threat to humans? ...
3
votes
1answer
38 views

Why do men grow facial hair?

Ancestral facial hair. Our closest ancestors, the chimpanzee and bonobo, both grow facial hair around the mouth area. What is noteworthy is that this is the case in both males and females of the ...
0
votes
0answers
12 views

Why can we use hydrogen peroxide to clear insects from our ears?

From what I was taught in high school, hydrogen peroxide is corrosive. However, I just saw a news about someone with cockroaches in his ear, and people in the hospital used hydrogen peroxide to clear ...
1
vote
0answers
28 views

How octopus develops its imitation skill?

I've watched one documentary about a Mimic octopus which they can imitate another animals in several form e.g. a Lion fish, a Sea snake, a Flatfish, etc. My question is how these octopuses can have ...
7
votes
2answers
77 views

Do biological phenomena follow Gaussian statistics?

I have recently entered the life sciences (from physics). I am concerned about the use of p values in the life sciences literature. For example, in this article, they test 9 - 12 rats in a control ...
1
vote
2answers
31 views

Are genes on the 5' to 3' strand only?

I confused myself during studying, and wanted to confirm something. Since transcription via RNA polymerases only takes place in the 5'to 3' direction, that would mean that that 5' to 3' strand is the ...

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