-5
votes
1answer
66 views

Why do people find anal sex pleasurable? [closed]

First of all, anus is not a genital part like vagina and therefore pleasure due to anal sex should not have any fitness advantage. I wish to know why many people find anal sex pleasurable when it ...
0
votes
2answers
38 views

R/Bioconductor query for a gene?

I'm fairly new to bioinformatics, so please be gentle ;0 Is there a way to query a particular gene using a script in R/Bioconductor? I'm particularly interested in Gene Ontology terms. There are ...
1
vote
0answers
13 views

Is there a quantifiable amount of time by which neuroplasticity accelerates learning rate? [closed]

Specifically, are there any studies that compare, to use a hypothetical example, the amount of time it takes an adolescent to exhibit mastery of a concept as compared to an adult, thus determining the ...
0
votes
1answer
14 views

What is the rate of mRNA decay in saccharomyces cerevisiae?

I am just looking for a number whether that is a mean or an estimate. I am having trouble finding this value on papers because the papers mention only the methods for calculating such a value. Is ...
4
votes
1answer
81 views

Are thunder and lightning necessary for any organisms?

Comparatively irregular events such as forest fires are necessary for some plants to grow (see here). But do any plant or animal species have similar dependence on thunder and/or lightning?
0
votes
1answer
17 views

Does A/T, G/C pairing exist in haploid?

I'm trying to understanding base pairing. So every linear chromosome is a double stranded double helix. Is this double stranded property the same as saying an organism is diploid? Or do the ...
1
vote
1answer
62 views

Why didn't Mendel ever see the recombination?

I saw a video on youtube of a professor saying it's because of the quantity of peas. So Mendel would never have published his work if by any chance he had found a pea with recombination. Someone can ...
0
votes
0answers
12 views

Making tea out of grape leaves -when to pick the leaves? [migrated]

I have a question for you regarding make tea out of grape leaves. I want to make some, but don't know when the best time to pick the leaves it. I know it's made in Greece and the USA, too, but not in ...
0
votes
0answers
24 views

The drawing of genetic crosses

I'm preparing myself for the GRE. The quantitative stuff has all been going well. I'm aiming for a geology grad scheme. In the event of having to take subject specific tests, I'm teaching myself a few ...
1
vote
0answers
18 views

Looking for dataset of proteotypic and non-proteotypic peptide

I doing experimentation for peptide prediction using machine learning. I need some data for testing. My background is Computer Science. Any advice how to find proteotypic and non-proteotypic peptides....
0
votes
0answers
28 views

Why haven't modern grass based crops overrun wild grasses?

Modern grass based crops are significantly superior to wild grasses, they grow faster, are stronger stemmed, have larger leaves and higher seed yields in terms of individual seed size, giving ...
0
votes
0answers
6 views

Effector protein emission rate in host by pathogen

Is emission of effector protein a one-time process in the host, or does it emit effector multiple times in the same host? If effector proteins are emitted multiple times by the pathogen into the host, ...
0
votes
0answers
12 views

Rate of production of proteins in gram negative pathogenic bacteria

What is the rate of production of effector proteins in the gram-negative pathogenic bacteria, if any? The translocation unit that is present during secretion of effectors in the secretion system that ...
1
vote
1answer
38 views

Human Demography - Where can I find this statistic?

In "An Introduction to Genetics" by David J. Merrell, copyright 1975 by W.W. Norton + Co., p. 742, in the Chapter "Genetic Counseling and Eugenics," the author states: "... 50% of the women produce 85%...
0
votes
1answer
16 views

Common Errors For Low R Value in Bradford Assay

I've recently started doing Bradford Assays for my samples and my standard curve has been non-linear and I have been getting low R values (.90-.95). I initially thought the error was in pipetting, ...
0
votes
0answers
8 views

Are there any databases for melanoma gene expression data?

I have a training dataset from TCGA to perform survival analysis, but I would like to find another dataset for testing and validation. Do you know of any datasets that have patients, their time until ...
0
votes
0answers
25 views

Zika Acquired Immunity

A woman is bitten by a mosquito carrying the Zika virus and then develops symptoms. Her symptoms disappear after a given amount of time and she becomes effectively immune to reinfection (assuming she ...
1
vote
0answers
15 views

Do blurry images cause eye strain? At what point is an image so blurry the eye stops trying to focus it?

I'm a user experience designer concerned about a new trend of blurring screens when showing a lightbox/dialog box over top (see below). From what I know, blurry images cause the brain to work hard ...
1
vote
1answer
36 views

why are malarial parasites specific for anopheles [closed]

why are malarial parasites specific for anopheles mosquito. why do they need only anopheles, they just need lower temperature to complete their life cycle. all mosquitoes are cold blooded, so they can ...
5
votes
1answer
80 views

How long would it take for a change to the DNA would take effect?

I am not a Biology Student (sorry guys!) but I have thought about this question for a while and hope that maybe one of you can answer it. Lets say that I had my DNA changed so that I wouldn't be ...
2
votes
1answer
19 views

Relation between biomass and radius of roots system

Is there a known relation between the mass of a plant to the size of its roots? For example, can I take the root size to be proportional to the biomass of the plant like in this relation: $$R = R_0 (...
0
votes
0answers
13 views

How can an individual have A- and B- antibodies and no A- and B-antigens? [duplicate]

Why, or how, can someone of the "O Blood group" have A- and B-antibodies without having A- and B-antigens? This doesn't make sense to me, as an antigen is required to trigger antibody production?
0
votes
1answer
23 views

What's the highest temperature that algae can survive at?

I know there are a lot of different species of algae and that each one has different environmental tolerances. I've seen data on different species: brown alga Sargassum echinocarpum J. Agardh - ...
1
vote
0answers
25 views

How to specify a promoter in de novo gene synthesis service?

I am trying to use a de novo gene synthesis service (Genscript) and one part confuses me: Where do I pick the choice of promoter? Or is the promoter choice automatic based on my plasmid choice? e.g....
1
vote
1answer
39 views

Comparative effectiveness of antibiotics against colonies and growing bacteria

Appropriate antibiotics usually eliminate bacteria. However are the same antibiotics as effective against bacteria that have grown to form a colony?
-1
votes
0answers
14 views

RNA-seq: Controlling FDR in multiple contrasts [migrated]

I'm working on a RNA-seq analysis project and I have come across a statistics problem. I have 3 groups and I need to look for differential expression for each pairwise comparison. Do I control the ...
4
votes
1answer
241 views

What do the letters 'p' and 'c' mean in mutation descriptions?

Example: NM_000525.3(KCNJ11):c. 67A>G ( p. Lys23Glu) AND Permanent neonatal diabetes mellitus Does "p" stand for "polymorphism"? What does the letter "c" stand for?
1
vote
0answers
35 views

Can a firefly control its glow?

I've just seen this animation: I always thought the firefly glow is ongoing slow chemical reaction, like in glowsticks though through different chemicals. As such it seems impossible to control ...
3
votes
1answer
82 views

Identification of a spider from my basement

It's a little over 1" long including legs, and I found it in my basement in Pennsylvania. My guess is a funnel weaver, which would be nice since then I can free it (right?) from the tin can it's ...
1
vote
0answers
42 views

Fish and microplastic particles

How does exposure of fish to microplastic particles decrease egg-hatching and give young fish a craving for them? From Garbage in, garbage out: marine plastic 2016-06-24 | Espresso There is more ...
1
vote
1answer
47 views

Name of dominant dinosaur

I seem to remember reading some time ago about a dinosaur appearing very prominently in the fossil record, with continent-wise distribution. The layer is known specifically for having so many fossils ...
0
votes
1answer
41 views

Parameters of Variant calling analysis [closed]

What is the good or stringent parameter for variant calling. At present using the DP > 10 and Q > 30 for Variant calling. Is it ok.? Thanks
0
votes
0answers
12 views

Are apples really better for the immune system than most fruit? [migrated]

"An apple a day keeps the doctor away", the saying goes, implying that apples are somehow especially good for the immune system. But does this idiom have any validity to it? Are apples high in ...
-1
votes
1answer
30 views

what percent of DNA consider to be “junk”?

Does 98% of a whole human genome observe to be "junk" or 98% of each single human DNA observe to be "junk"or "non protein coding region"?
0
votes
1answer
17 views

Are different eye colors indicative of chimerism?

If an animal or person has different colored eyes, does that mean they are a chimera?
1
vote
1answer
16 views

How are constitutive enzymes regulated?

I found that inducible enzymes can be regulated by many ways, but I cannot find how constitutive enzymes are regulated...
3
votes
2answers
52 views

How should “the human genome” be interpreted?

What does sequencing "the human genome" mean? Don't individuals have unique genomes?
1
vote
1answer
70 views

How to batch convert gene names to protein IDs in Uniprot?

I have a list of >1000 "ordered locus names" from the STRING database (also called gene numbers, ORF numbers, or CDS numbers by uniprot). They're in the form of 'b0014', 'b0015', etc. I'd like to ...
1
vote
0answers
30 views

Forgot to cool slides before washing

I just finished an immunofluorescence experiment and I'm wondering what went wrong. The tissues seem dimmer than they should be. One mistake I made was: I completed the antigen retrieval step, in a ...
1
vote
2answers
62 views

What is meant by topographic barrier?

There are three types of barriers, physical , climatic and biological barriers that can prevent the dispersal of organisms. Topographic barrier falls in the category of physical barrier but exactly ...
4
votes
1answer
105 views

Are all genetic instructions in DNA?

Wiki says DNA is a molecule that carries most of the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. What ...
0
votes
1answer
29 views

What is the effect of wheat's polyploidy on wheat itself and on us?

According to Wikipedia, "Hexaploid wheats evolved in farmers' fields", and bread wheat is among them. There is also diploid and tetraploid wheat. I guess that hexaploid wheat, besides the obvious ...
0
votes
0answers
22 views

How does plant life obey the constraint that the change in Gibbs free energy in a reaction must be negative?

My understanding is that if a reaction takes place, either entropy of the system must rise, or energy must be released from the system as heat, or both. (Citation: paraphrasing from The Vital Question,...
0
votes
0answers
11 views

Can temporomandibular joint disorder cause sensorineural hearing loss?

Is the pain when walking or running with such a disorder an indicator that hearing loss is occuring or going to occur? Ear pain is considered a symptom for this disorder. Can that be an indicator of ...
1
vote
1answer
31 views

How to put a gene under the control of a regulable promoter?

Suppose I have a hetrologous (eukaryotic, plant) gene sequence that I want to express in E Coli under the control of a regulable promoter (say the lac promoter induced by IPTG) how exactly does one ...
0
votes
0answers
25 views

Can crocodiles live past 155 years of age?

I was at the Teluk Sangat Crocodile Farm ("Crocodile World") in Johor, Malaysia. There were a bunch of crocodiles that were claimed to be 60-80 years old (these were printed signs), one or two that ...
3
votes
1answer
41 views

Is there evidence to suggest that sharks from prehistoric times live in the deep of the oceans?

I've had friends see the boat and giant teeth of a giant shark attack of a boat in Japan. (Teeth larger than a great white). [I can't find anything about this on the Internet]. In addition, this ...
0
votes
0answers
39 views

Stopping the Gag Reflex: How and why does it work?

I was talking to some friends over the weekend, and one of them made a comment about gagging. He said that he read or watched that clenching your thumb with your other fingers (making a tight fist ...
0
votes
1answer
38 views

Deducing protein sequence length from gene DNA sequence length

Is there a standard way to deduce protein sequence length from gene DNA sequence length of the gene coding for it? Naively I had assumed that ...
0
votes
0answers
20 views

RNA interference and the former Petunias experiment >

I'm having problems trying to understand how RNA interference works. From what I understood, in simple terms there is this dsRNA which is fragmented into siRNA by the enzyme called Dicer, and those ...

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