1
vote
0answers
5 views

Are people genetically predisposed to being interested in specific fields/ideas? How does specialization occur?

I'm not sure if I formulated my question well, but I'm curious about a couple statements made by Steven Pinker and and James Heckman. In this interview: ...
0
votes
1answer
9 views

Could the Warburg effect be used to starve cancer cells in situ?

What is wrong with the following chain of reasoning? Nearly all cancer cells rely on high rates of glucose uptake (upto 200 times more than normal cells). This is known as the the Warburg effect. ...
1
vote
1answer
16 views

Relationship between small and large fast-twitch motor units

When large fast-twitch motor units are temporarily fatigued, non-fatigue small motor units in the same muscle are impaired for small delicate tasks. Why? When impulses from the brain comes down, the ...
0
votes
1answer
8 views

how we don't breathe nitrogen when it makes the most of air?

How we don't breathe nitrogen when it makes the most of air? Why we are always tend to breathe oxygen,not hydrogen and nitrogen?
1
vote
1answer
11 views

In which direction plants' root grow in weightlessness?

As far as I know, roots of plants grow to the direction of Earth's gravity - this is called gravitropism. But what happens if plants are in space? Are they able to perceive gravity in state of ...
0
votes
0answers
4 views

Any recommended links for lectures by Dr. Russell Vance from Berkeley [on hold]

Can you please recommend me any links for the lectures by Dr. Russell Vance on Immunology, Host Pathogen Interaction? Thanks Piyush
0
votes
0answers
10 views

What is the current molecular explanation of Mendel's pea cross?

With reference to the simplest Punnet square for Mendel's pea plant experiments it occurred to me that I could not connect the little I know about genetics to the little I know about molecules. The ...
0
votes
0answers
12 views

Studying genetics

I am interested in studying disorders that are genetic in origin. However, I am having difficulty in understanding molecular and cellular mechanisms regarding processes such as meiosis, mitosis, and ...
0
votes
0answers
10 views

Follow up to Genetics Question

In studying for biology courses I feel as though I have to take things at face value. Is there a way to get around this and study from a more logical standpoint? I can memorize things but don't want ...
0
votes
1answer
14 views

To have TBE vaccine during allergic times with mild asthmatic symptoms?

My assistant says that if you have asthmatic symptoms you cannot have TBE vaccination, although you are living in the active zone of TBE. Cases mild allergic symptoms allergic symptoms under ...
1
vote
0answers
8 views

Preventing paracetamol overdose

Paracetamol overdose is one of the most common drug toxicities. It may be treated by intravenous N-acetylcysteine which replaces the glutathione that is used up in paracetamol metabolism to prevent ...
0
votes
0answers
9 views

Why dogs are often mercurial?

I'm not a huge animal fan, but my experiences show that some (most?) of the dog breeds are active and need exceptionally lot of place to stay healthy and happy. What's the reason behind it? I know ...
0
votes
0answers
5 views

How do I share a protocol on Synbiota?

After I create a protocol on Synbiota, how can I share it with colleagues not in my project?
0
votes
1answer
37 views

Why cats and dogs seem to hate each other?

There's an infamous "legend" that dogs attack cats if they see them. What's the reason, and what is it depends on? Are there exceptions?
6
votes
4answers
127 views

Is there a comprehensive life science techniques/methods database?

There are so many techniques/methodologies in the life sciences that we can use to interrogate interesting questions. The thing is, most of us are completely unaware of the available methods we can ...
1
vote
1answer
13 views

definition of tempo and mode in evolution

I am reading Punctuated Equilibria: The Tempo and Mode of Evolution Reconsidered, which mentions the "tempo" and "mode" of evolution. I'm not familiar with the related literature and when I google the ...
1
vote
1answer
15 views

Definition of Linkage Desiquilibrium (LD)

According to [wiki][2], linkage disequilibrium $D$ equals $$D = x_{11} - p_1\cdot q_1$$ where: $$ \begin{matrix} \text{Haplotype} & \text{Frequency}\\ A_1B_1 & ...
1
vote
1answer
25 views

Effect of the health of the male parent at the time of conceiving

Does it matter at all in determining the traits of a baby what the current health of the father is? For example, let's say I got diabetes at the age of 40 because of the poor lifestyle choices. Will ...
0
votes
0answers
6 views

How does a TOPflash/FOPflash assay work to detect beta-catenin protein expression?

I am reading an article (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3596711/) wherein a TOPflash/FOPflash assay is used to detect beta-catenin protein levels in a COS-7 cell line. I can't find a good ...
1
vote
1answer
13 views

Are bronchioles and alveoli covered by respiratory epithelium?

Which parts of respiratory apparatus are covered by respiratory epithelium and which are covered by other kinds of epithelium?
2
votes
0answers
44 views

Why do genetic drift generates negative linkage disequilibrium?

The very first sentence of the abstract of this article are: "In finite populations subject to selection, genetic drift generates negative linkage disequilibrium, on average, even if selection ...
2
votes
1answer
18 views

How does tree resin capture arthropods?

In regards to a published paper of a spider about to make a meal out of a parasitic wasp (http://www.tandfonline.com/doi/abs/10.1080/08912963.2011.640399#.U1kSV14gVBU), it reminded me of a issue I've ...
0
votes
1answer
19 views

Neuroscience:Spinal tract

I have few confusions finding the answer for the questions below. I have tried answering the first two But i am not sure if it is right or not? And i do not know about the third one? 1.in which ...
2
votes
2answers
563 views

Name of scientist who discovered lifesaving drug and chose not to patent it?

I recall reading about a 20th century scientist who made a life-saving drug that could have patented it and made millions. He chose not to and saved the lives of millions around the globe. I thought ...
0
votes
1answer
8 views

Why rectus abdominis is not proximal muscle?

I am thinking this picture which shows proximal muscles. Why for instance pectoralis major, subclavius and rectus abdominalis are not included in proximal muscles?
2
votes
1answer
31 views

Number of autoregulation and FFL motifs in a network

Suppose we have a network with N* nodes (N* is the number of internal nodes). Every directed link in this network exists with probability p. What would be the number of: motifs that are ...
5
votes
2answers
426 views

Species Identification - small insect: is this a bed bug?

I found this bug in my apartment in Chicago. We had bed bugs in our house the previous year (but we thought we got rid of them). This bug was very small - maybe 2 millimeters in length. These ...
1
vote
1answer
30 views

identification of this flower

I saw this flower in Pulau Ubin in Singapore. Can anyone identify the species of this flower? Thanks in advance!
1
vote
1answer
25 views

identification of species of tree

I just want to confirm the species of the tree in the middle of the picture. Is it the "Flame of the Forest"? This is taken in my school campus. Thanks in advance!
0
votes
0answers
13 views

Can paralogous genes be under negative selection?

I have just aligned 9 paralogous genes from human, uploaded them into MEGA and calculated negative selection. Can there be negative selection acting in between paralogous genes? Or how should I ...
2
votes
0answers
51 views

How Sex Evolved ? and when?

As I know evolution comes bit by bit mutation by mutation How sex evolved which requires a major change in at least two individuals one to become male and one to become female ? When that happened ...
1
vote
1answer
26 views

Measurement of glucose concentration in the human brain

If I want to measure the exact glucose concentration in a human brain then how can I proceed to do that? Is there any technique or assay to do that?
0
votes
0answers
9 views

What is the distribution of agent on plasma proteins in ECF?

I am studying Montelukast here: Montelukast is more than 99% bound to plasma proteins. The steady state volume of distribution of montelukast averages 8 to 11 liters. Studies in rats with ...
1
vote
0answers
11 views

Source of information on the evolution of aging/senescence

Do you know a good review (published peer-reviewed or an online course or whatever) that offers a good overview of all hypothesis explaining the various patterns linked with aging? I'd like this ...
2
votes
1answer
262 views

Advantage of being deuterostome

We know that most of the so called "Advanced" organisms are deuterostomes (i.e., development of gut starts from anus). Is there any evolutionary advantage of that? If not, why and how did it evolve?
0
votes
1answer
21 views

How to increase the rate of absorption and assimilation of food? [on hold]

i was reading this and want to know excerpt from the above link...
2
votes
1answer
25 views

How to interpret the breeders equation?

The univariate breeders equation is defined as, $\ R = h^2 s$ where $\ R $ is the response, $\ h^2 $ is the heritability (additive genetic variation), $\ s $ is the selection differential. The ...
1
vote
0answers
22 views

identification of species of this bird

Hi I saw this bird near my school canteen in Singapore in Spring. Can anyone identify the species of this bird? Thanks in advance!
1
vote
1answer
18 views

fibrinogens and fibrins - are they the same molecule?

Some proteins are "activated", like fibrinogens; they are turned into fibrins by thrombins, and then the fibrins can aid in blood clotting. Are fibrinogens and fibrins the same molecule, just in ...
4
votes
0answers
70 views

Model for fluctuating selection

Is there any mathematical model to predict the behaviour and long-term consequence of counter-acting selection at different time scale? For example, let's consider the bi-allelic gene $A$, with ...
1
vote
2answers
39 views

How to determine whether the energy of a stem-loop fold is significant or not?

If I have a predicted RNA stem-loop of energy -0.30 kcal/mol, and another of -4.9 kcal/mol, how do I tell whether such a structure is a significantly stable structure or not? Our two competing ...
4
votes
0answers
44 views

Selection on linked loci in a diploid population

Let’s consider two linked loci $A$ and $B$ that are both bi-allelic. In consequence, we have four different possible haplotypes $A_1B_1$, $A_1B_2$, $A_2B_1$, $A_2B_2$, which frequencies are $X_1$, ...
4
votes
0answers
41 views

Effective population size and overlapping generations

From this book; If generations overlap, then the effective population size $N_e$ does not equal the population size $N$. I know mathematical formulations in order to find the effective population ...
0
votes
0answers
40 views

Effect of natural selection on phenotypic variance

Short background Theoretically speaking, natural selection causes a decrease in genetic variance and because the environmental variance should remain unchanged, natural selection causes a decrease of ...
1
vote
0answers
44 views

How to maximize lung oxygen intake?

What method of breathing provides a sudden surge of oxygen into the lungs filling it as full as possible in volume and density. Deep breaths? Shallow breaths? Breaths taken while bent over? Deep ...
1
vote
2answers
281 views

Why aren't we allowed to refreeze previously thawed breastmilk in refrigerator?

https://www.breastfeeding.asn.au/bf-info/breastfeeding-and-work/expressing-and-storing-breastmilk Previously frozen— thawed in refrigerator but not warmed 4 hours or less (ie the next ...
2
votes
0answers
17 views

Why is post-vaccination fever for 4CMenB so high?

When considering the introduction of 4CMenB vaccine, the Joint Committee on Vaccination and Immunisation said: The sub-committee noted that the clinical trials data suggest that when 4CMenB ...
1
vote
1answer
26 views

identification of species of snake

Can anyone identify this colorful snake found at Pulau Ubin in Singapore? Thanks in advance!
0
votes
2answers
39 views

Which types of hydrogen bonds are known to exist in RNA secondary structures?

I'm programming an implementation of an algorithm for pattern matching in RNA structures. The algorithm assumes the following types of base pairs: Plain: No base pairs (just the primary structure of ...
0
votes
1answer
18 views

is there a way to do batch download for all gene pathways?

I would like to download all the gene pathways and genes of each pathway. Preferably, gene length of each gene as well. It would be a lot more convenient if there is an R package.

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