1
vote
1answer
30 views

Is it possible to have a random un-mutation of genes?

According to this article: Gene mutations can be classified in two major ways: Hereditary mutations are inherited from a parent and are present throughout a person’s life in virtually ...
1
vote
0answers
16 views

Does class switching occur both in B cells and Plasma cells?

I understand that the cell class switches to change the type of immunoglobulin it is producing. The B-cell produces the membrane bound B-cell receptor (BCR) while the plasma cell produces the the ...
-1
votes
1answer
33 views

What legal possibilities exist to get access to articles behind paywalls? [closed]

Many publications, be it in high-profile journals, proceedings, book chapters or any other medium, cannot be accessed without subscription alongside substantial costs, even though most of the ...
0
votes
0answers
10 views

is the red eye reduction lamp dangerous to an infants eyes? [on hold]

is the red eye reduction lamp dangerous to eyes? I have a friend who is concerned about us taking so many pictures of her 3 month old.
0
votes
0answers
41 views

Why is the protein ubiquitin so ubiquitous?

Ubiquitin is a protein tag that is attached to proteins in order to mark them for destruction/proteolysis by the cell. This system is sometimes used for clearing out harmful viral proteins that infect ...
0
votes
0answers
9 views

How does the Jendrassik's manoeuvre reinforce reflexes? [migrated]

According to Wikipedia, The Jendrassik maneuver is a medical maneuver wherein the patient clenches the teeth, flexes both sets of fingers into a hook-like form and interlocks those sets of ...
0
votes
1answer
25 views

Is it safe to feed an adult fire salamander with slime maggots? [on hold]

As a reminder, maggots feed of a flesh, while fire salamander consumes his prey alive, without killing it. Can it happen that the maggot will start eating the salamander from the inside?
3
votes
2answers
43 views

Does an increased reproduction/mortality rate provide an evolutionary advantage?

If a species has a high mortality/birth rate, then it is able to adapt to changing environments more quickly than species that live for a long time. Without a high mortality rate, food and other ...
0
votes
2answers
44 views

Why cancer disease is named after sun signs ? [duplicate]

I googled it, It didn't helped me a lot. So Why cancer disease is named after sun signs ?
3
votes
2answers
45 views

Is this in vivo or ex vivo?

This question has probably been asked a few times but I get the concept I just dont know how to apply it for this paticular experiment I aim to use cherry tomatoes and determine its glutamate content ...
0
votes
0answers
8 views

How long can/will an infant hold his/her breath as part of the dive reflex?

Various other questions on the site have talked about the Diving Reflex, which is also known as the Mammalian Diving Reflex. This reflex is observed in mammals of various species, but also in human ...
3
votes
1answer
77 views

How Much DNA do Siblings whose Parents are First Cousins Share?

On average, two siblings generally share 50% of their genome. How much does this increase if the siblings' parents are first cousins?
0
votes
2answers
20 views

BLAST with minimum E-value cutoff

It's easy to set the maximum E-value threshold in a BLAST request. I need to set the minimum E-value. Does anybody have any suggestions?
0
votes
2answers
32 views

Identification of a Lepidopteran

I’m afraid the quality of the television picture isn’t good enough to identify it, but was there anyone in Paris on 10th July 2016 who knows what kind of moth this is or can supply a better photo? My ...
4
votes
0answers
18 views

Reason for variation in the site of onset of edema

What is the reason for the observed clinical difference in the earliest site of onset of edema in cases of different etiologies? For example, in Congestive Heart Failure, it appears initially as ...
0
votes
1answer
16 views

Is DNA sequencing coverage a function of sample purity?

How is coverage affected by the purity of a sample? And can coverage for a sample be affected by other things, like the library preparation or manner in which the sample was stored?
0
votes
1answer
18 views

How does gene editing in one cell affect other cells?

I have read about gene editing and I have some questions concerning this technology: With gene editing, are we correcting the genes in all the cells or a single cell? If the gene editing is done ...
6
votes
1answer
61 views

What is the cause of the packaging capacity limit of recombinant adeno-associated viral (AAV) vectors?

I am working with recombinant AAV and I am puzzled by the limit of their packaging capacity (around 5Kb ssDNA), that is really a huge drawback for gene delivery. I have tried to look more in deep ...
0
votes
0answers
6 views

Ciliary muscle and accommodation

Can anyone explain how contraction of the ciliary muscles causes relaxation of the zonules? Please explain it anatomically i.e. the attachments of ciliary muscles and its relation with the ...
1
vote
1answer
14 views

Accommodation mechanism. [closed]

Can anyone explain how contraction of the ciliary muscles causes relaxation of the zonules? Please explain it anatomically i.e. the attachments of ciliary muscles and its relation with the ...
0
votes
2answers
28 views

What amount of genes co-expressed should be expected in a tissue?

I am working with gene expression microarrays of tumor tissues and I want to use a program to find the clusters of co-expressed genes in order to know if some particular genes are co-expressed with ...
0
votes
0answers
11 views

How to stop common myan(invasive species) from nesting in nestbox made for oriental magpie Robin (residential species) ? [duplicate]

How to stop common myna from coming to nestbox made for oriental magpie Robin, use of anti-myna baffle and removal of nesting materials from nest is also done, even though common myna comes at nestbox ...
4
votes
1answer
238 views

“X” in stock solutions

We prepare buffer solutions with concentration in terms of x, for example 50x TAE buffer. How do we come up with ...
1
vote
0answers
20 views

Does my brain have limited learning capacity or memory?

Lately in my free time I like to read books, articles etc etc.. What I have discovered, or maybe it is an illusion(lack of concentration or something), is that I usually forget most of the material ...
1
vote
0answers
29 views

Natural rulers: What organisms have the most regular size?

What organisms exhibit the most precise length scales? E.g. are there trees with rings that are of very precise thickness, or single celled organisms which are all very nearly the same length? In ...
1
vote
1answer
21 views

PBST vs. TBST buffer in western blotting

What is the advantages and disadvantages of using either PBST or TBST in western blotting, or while working with proteins in general? Are there other buffers which are also used for western blotting, ...
2
votes
1answer
56 views

What does completing the course of antibiotics accomplish?

This article from the WHO states: If you stop treatment early, there is a risk the antibiotics won’t have killed all the bacteria that made you sick and that it will mutate and become resistant. ...
0
votes
1answer
28 views

How many Amperes to kill fruit flies and mosquitoes?

As above. Making a homemade trap to kill them all.
1
vote
0answers
71 views

Found an unknown species, whom should I contact?

My father has found a very queer looking insect. He'd been watching it for over half a year on the tree right next to our house and in all this time hasn't been able to find anything like it on the ...
0
votes
1answer
23 views

Is brachydactyly due to mutation?

I have this so called "clubbed thumbs"also known as brachydactyly. It is of D-type. I searched for it on internet and found that it is a dominant inherited disease. But to my surprise,none of my ...
0
votes
2answers
31 views

Are all prokaryotic promotor regions the same, or do they differ depending on the product of the transcript?

Are all prokaryotic promotor regions the same or do they differ depending on the protein encoded by the mRNA being transcribed? What I am thinking is that if activator proteins are a method of ...
0
votes
0answers
18 views

Are there observed instances of genes expressing undesirable traits to dissuade members of a particular species from reproducing?

All living things on earth are programmed to both survive and reproduce, but are there observed, documented or otherwise novel cases where the genes of any particular member of any particular species ...
0
votes
0answers
22 views

Sensory neurons, interneurons and motor neurons - recognizing the type of neuron at microscopy images

Is there a simple way to distinguish between sensory neurons and interneurons and motor neurons at the microscopic images? I read a little bit about Open Connectome Project. Is there a possibility of ...
0
votes
0answers
17 views

How do afferent mechanoreceptors work on the finger pads?

I'm having some difficulty understanding how the afferent signals are sensed in the finger pads. My understanding is that for mechanoreceptors (SA1, SA2, RA1, RA2), as the indenting force increases on ...
0
votes
0answers
6 views

Can I Survive on a Mostly Grass/Leaf Diet? [migrated]

I want to guarantee an easy, effective, and possibly free food source for the rest of my days, but I am skeptical. Growing my own organic food would be ideal, but that would limit my mobility or ...
1
vote
2answers
36 views

Can it be said that proteins determine phenotypic traits?

I am not ignoring the function of genes, or the gene-environment interactions. What I want to know is if behind every "observable characteristic" we can find a protein -or a group of proteins- which ...
0
votes
0answers
54 views

How do marine mammals and penguins maintain bone density?

After much searching on Google with no results, I decided to ask about my question here. If I'm not mistaken, swimmers' bone density is less than normal; at least for lifetime swimmers. Astronauts ...
0
votes
0answers
27 views

How to determine if a tree is unrooted in Newick format?

I have two questions: 1- Given a tree in newick format, is there a standard way of determining if it is rooted or unrooted? 2- How to 'manually' root an unrooted tree in newick format? As far as I ...
6
votes
0answers
42 views

Optimal pH of protein buffer? Basic principles to adjust buffers according method and analysis

Protein buffers such as PBST, which is used in western blotting, are normally adjusted to pH 7.4. When I try to find why, I find some information about optimal pKa for protein stability. Im not sure I ...
0
votes
0answers
13 views

How Quickly Is a Body To Not Accept a Food Well [on hold]

I don't know the actual term. What I do know is that if a person doesn't eat a certain food or type of food for an extended period of time, their body doesn't react well to the food if they eat it ...
-1
votes
0answers
16 views

Are seagulls ever cannibals?

I'm obviously not talking about seagulls eating other birds in general. Only actual seagulls. Seagulls are notorious for being almost as omnivorous as it's possible to be. They're known to eat ...
0
votes
1answer
22 views

How to define a 'trait' objectively?

I'm coming across an increasing number of papers that use trait-based approaches for risk assessment, like this one . This paper defines a trait as follows: Traits are the physiological, ...
5
votes
1answer
36 views

What Species of Duck/Waterfowl is this

I snapped a picture of this beaut in Irvine, CA, but I do not believe it is in the list given in "Ducks at a Distance: A Waterfowl Identification Guide" by Bob Hines (http://www.gutenberg.org/ebooks/...
0
votes
0answers
13 views

Are yeast plasmids methylated?

Do yeast plasmid have methylation? If they do have them, then what kinds of them?
0
votes
0answers
5 views

Why the position of simple sequence repeat at the gene and related transcript sequences are different?

I'm working on the simple sequence repeat (SSR). I found that just one region (about 21 bp) with SSR motif in a given gene. This gene has multiple transcripts, which the same SSR motif was located in ...
1
vote
1answer
39 views

Does having to urinate imply that you are becoming dehydrated?

This question came up after I read another question that coffee does not dehydrate you, but instead acts as a mild diuretic. Does having to pee imply dehydration? Allow me to elaborate: When you ...
0
votes
1answer
15 views

How do you obtain specific mRNA transcript levels for comparison from a Hi-Seq dataset?

I have HiSeq data from mice exposed to two conditions. I would like to answer the following question: "Is there a significant difference in mRNA transcript levels when comparing condition A to ...
0
votes
0answers
11 views

VDJ recombination in non immune cells

Is VDJ recombination active in non immune cells? If not then what is the mechanism that triggers it in immune cells but not in other cells?
3
votes
1answer
41 views

How did life survive in the Snowball Earth theory?

There is this theory that says that the whole Earth was once covered with snow and ice. How was it possible for life to survive this extreme state?
0
votes
0answers
17 views

How is 'probability of new species origination' defined?

I was reading about how biologists study the change in the rate of species origination, and they estimate the probability that a new species will arise. How is this probability defined and calculated ...

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