0
votes
0answers
8 views

Is there revolution in humans since the first homo sapiens sapiens

In a thinking mood, I was wondering if the human species has changed since they have first become homo sapiens sapiens. I asked myself this question because I was thinking about how we will evolve ...
0
votes
1answer
12 views

Recommended sequence clustering algorithm for transcriptome data

I'm working on a project where I'm going to analyze a large amount of transcriptome data. After assembling our RNA-Seq reads into contigs using Trinity, it looks like I'm going to have about 10GB of ...
1
vote
0answers
14 views

How to remove bad lanes in ImageJ Westernblot analysis

I use ImageJ to do an analysis of a Westernblot Image. If everything goes as wanted the workflow is fine. But if I do something wrong creating a lane there is no undo for a lane and also no way to ...
0
votes
0answers
28 views

Can two women have a daughter?

In vitro fertilization is a pretty routine procedure in which a female egg is fertilized by sperm outside the body. Recently apparently there has also been something similar in which the genetic ...
4
votes
1answer
147 views

Why Other Pigeons kill the baby if touched by human?

I used to have too many pigeons in house. If by chance one of the baby falls out of the nest we used to put it back using gloves. Usually, if we touch them with bare hands, the other pigeons usually ...
2
votes
0answers
12 views

What is the core mechanism behind neuroplasticity?

Specifically I am looking at reopening of the critical period of plasticity. Modern neuroscience has started to unlock the secret of neuroplasticity. A common experimental setup is with mice. They ...
2
votes
1answer
17 views

what would be the scientific name of this variety of dove

recently i came across a small dove who had its feathers tied by a rubber band so that it $would'nt$ fly. it looks some what like this i was stunned by seeing it as i have never seen a dove in ...
0
votes
0answers
15 views

What is the function of ferredoxin? [duplicate]

In the following reaction what is the function of ferredoxin? As I recall from anaerobic respiration as there is no oxygen to act as the final electron acceptor Lactic Acid or Ethyl Alcohol is ...
9
votes
3answers
596 views

“Same” DNA vs genes [duplicate]

It is often cited that humans share 99% (or 98%) of their DNA with chimpanzees. On the other hand it is stated that siblings share only half of their genes. What (if any) is the difference between ...
2
votes
1answer
29 views

Teens concerned about impregnation through clothes

How active are you online? How much do you browse the internet? I was surprised to see that many teens ask the same question regarding what is called Dry Humping, which, in definition is: dry ...
3
votes
1answer
35 views

How common is it to be pregnant with periods?

As you may know, some women claim that they have their period while they are pregnant. In the arab world they call it "Deer pregnancy", since when the deer gets pregnant, it still gets its' monthly ...
1
vote
0answers
20 views

Need project Ideas in Molecular Phylogenetics [on hold]

So I have a project student (undergraduate) who has been assigned a project to study the evolution of a gene (and possibly related genes) through species. I am not an evolutionary biologist, and hence ...
3
votes
1answer
17 views

Why are there so many sex determining systems in animals

There are several sex determining systems in animals. In mammals XY = male(except in rare cases where SRY crosses with genes on the X so that it is the reverse) and XX = female. In some birds it is ...
2
votes
2answers
55 views

Do women experience more bonding hormones than men after sex?

Does Oxytocin (or any other bonding hormone) increase more so for women than for men after sex? Someone told me that it increases 4-fold for men and 12-fold for women (unconfirmed). Is there any ...
1
vote
1answer
10 views

Differentiating Taenia solium and Taenia saginata Infections

I have been told that both are spread by pigs and cattle, respectively. I would like to know the complications caused by Taenia solium and Taenia saginata. Also elaborate how dangerous is one as ...
3
votes
1answer
23 views

Why does the sacrum fuse together?

Everywhere I look describes how the 5 sacral vertebrae start fusing together during adolescence and are totally fused by the time you're 30 or so. But nobody seems to explain why this happens. It ...
2
votes
0answers
29 views

How do taenia form a species?

I know that there are many hermaphrodite animals and plants. But many of them seem to still exchange genes by mating with another member of their species. I now happened to read the Wikipedia ...
2
votes
1answer
33 views

What is wrong with this analogy: Individuals are to alleles what governments are to individuals

I'm an amateur when it comes to genetics, I'm hoping to learn something from the corrections. I am taking epigenetics into account (kind of); all 3 entities are susceptible to external physical ...
3
votes
1answer
25 views

How to operate a microtome?

In the picture above (Source: Amazon.com, United Scientific MCT001 Hand Microtome) we can see a microtome. How is it operated?
5
votes
1answer
773 views

Facultative Cannibalism?

I heard about Larger cats eating the cubs. Is it some kind of facultative cannibalism or they can eat there own kind like that? What are the facultative cannibalism present in animal kingdom? What ...
1
vote
0answers
9 views

Why doesn't the herbicide 2,4-D damage lawn grass?

I sometimes use 2,4-Dichlorophenoxyacetic acid to control broadleaved weeds in lawns. It is selective, and quickly kills the dicot weeds, while other plants are unharmed. 2,4-D is a synthetic auxin, ...
3
votes
1answer
22 views

How can a plant resist glyphosate (Roundup) herbicide?

In my area, the most common weeds that strongly resists (N-(phosphonomethyl)glycine) (glyphosate) are the horseweed, or mare's tail, Conyza canadensis, and Canada thistle, Cirsium arvense There are ...
0
votes
0answers
4 views

Why doesn't Fenoxaprop-P-ethyl damage cool season lawns?

For controlling bermudagrass, Cynodon dactylon, a serious perennial grassy lawn weed in my area, I use the herbicide Fenoxaprop-P-ethyl. It kills the bermudagrass rather well, without damaging the ...
4
votes
2answers
306 views

What happens to lactic acid I eat?

Let's say I drink some Kefir Milk, what happens to the lactic acid in the Kefir Milk that has entered my digestive system?
2
votes
0answers
31 views

Where do the 31 spinal nerves start/meet?

Which part of the brain is the first place (from top to bottom) where all 31 pairs of spinal nerves (on each side) meet? Or if they all start at one place - where is that? Nominally, the beginning of ...
2
votes
0answers
49 views

How are new staining protocols designed for microscopy? [on hold]

How are new staining protocols designed for microscopy? Is it manual work or does it rely on computer simulations? Say for example I thought the H&E staining does not bring enough contrast. How ...
4
votes
4answers
162 views

What kind of microscope for ML/biological research?

I am a computer science student, focusing on machine learning applications. I have been always interested in biology but I lack any training in it. Now, I had an idea that I could introduce myself to ...
0
votes
1answer
30 views

About molecules and their shape

When a molecule is being used in some biochemical process it has a certain 3-d structure. Is this maintained throughout it's usage or can one specific molecule change it's 3-d shape while it is being ...
1
vote
1answer
301 views

If penis reconstruction from a clitoris is possible why isn't penis enlargement possible?

I don't understand why, if a penis can be reconstructed from a clitoris for sex change, surgical penis enlargement is not possible.
1
vote
0answers
19 views

Verifying Protein Folds

I have recently begun using Folding@Home and I am curious how people are prevented from cheating the system. It seems to me that unless the final result is easily verifiable users could submit bogus ...
1
vote
1answer
29 views

Age of shells on beach

As a child I watched tiny fiddler crabs living in conical shells, and many years later I find that people study fossil turritellids. So now I wonder: how old are shells, typically, that you see on ...
1
vote
4answers
58 views

Why is too much glucose harmful?

I learned the citric acid cycle in biotechnology school and how cells work; about ADP and ATP and how the Cellular respiration (C6H12O6 + 6O2 -> 6CO2+6H2O) works. I am interested in understanding why ...
0
votes
1answer
21 views

Where do flies go?

Where are flies attracted most? Apart from food odours, of course. Why do they seem to be attracted by hot and humid places? Do they prefer shades or light? Why do they tend to get inside very easily? ...
1
vote
2answers
64 views

Is pork poisonous?

Besides religious prohibition, there are several non-religious arguments against eating pork. A few of which are: Pigs and swine are so poisonous that you can hardly kill them with strychnine or ...
7
votes
1answer
42 views

Is there any completely Computation Drug ever launched in market?

I am working in bioinformatics(part of it in Drug Designing) for years, still if I have no idea about it. As it is too hard to prove (Pass all Clinical trials) and get FDA Approvals. So, My question ...
2
votes
0answers
26 views

Viagra for pain management

Not all men who take Viagra experience any sexual side effects about 40% have no change of sexual abilities on the pill. However like many women the drug in such cases cause a strong pain reduction ...
0
votes
0answers
19 views

Eukaryotic Cell from Scratch part 1 [on hold]

I am wanting to make an animal cell from DNA, RNA, Protein, and Fatty Acids as well as Glucose and other sugars. I am wondering. Should I start with the cell membrane or the nucleus and nucleolus(both ...
1
vote
0answers
11 views

Can non-carbonated energy drinks boost alcohol intoxication?

I just read news article about banning caffeine in alcohol drinks and about that energy drinks increase the urge to drink alcohol. Energy drinks cause sugar intoxication - answer about it here ...
1
vote
0answers
34 views

amino acid containing branched side chain

Branched-chain amino acid are degraded by branched chain alpha-keto acid dehydrogenase complex. These amino acids aren't degraded in liver because of the absence of this enzyme(in liver).Why the ...
0
votes
0answers
25 views

How do two bodies synchronize chemical reactions ? [on hold]

I understand that some biologists have a very materialistic view of life, in the sense that everything that a living does is a result of certain chemical reactions, if that was the case then when i ...
4
votes
1answer
48 views

Does a non-extinct gliding species of bird exist?

According to wikipedia was Archaeopteryx rather glider than capable of active flight. As a hunting strategy it crawl up to a tree (or other high positioned place) and glide from it to a prey. Most of ...
3
votes
1answer
18 views

bacterial cell wall degradation in humans

can human degrade the D-amino acid present in bacterial cell wall, I'm confused about it i have read somewhere that human can do so.If yes than why we need antibiotic to kill bacteria???If it is not ...
0
votes
1answer
25 views

Periods of Heavy Speciation

I have a set of microRNA ages with corresponding labels suggesting which clade they first emerged from. For instance, for hsa-mir-1, let's say, it would have an age of Eutheria. I have several peaks ...
2
votes
1answer
32 views

What is LD50 for 25i (25I-NBOMe)?

Firstly I would like to apologise if this is not correct place to ask this question, as it can be seen more as chemistry and not biology question. I was looking around for data on psychedelic ...
0
votes
0answers
17 views

how to measure sugar concentration in growth medium

I am growing up bacteria in a flask and was wondering how do I track the changes of sugar concentration from the growth medium in the flask. Thanks for the help
4
votes
1answer
37 views

Scale up of Bacterial growth from 250mL to 1-5L?

I am currently growing up a specific strain of E.Coli with a knockout in 40mL of growth medium (LB) in a 250mL shaker flask... My ultimate goal is to scale up this process to a 1-5L large scale setup ...
2
votes
0answers
17 views

Botany related Genetically improved Leucaena leucocephala seeds

I am looking for a fast growing Leucaena leucocephala seeds. Now, I am cultivating Leucaena leucocephala which can grow 6.00 Meters in a year. But I am looking for a genetically improved seeds which ...
3
votes
1answer
21 views

Why are particulate matter toxic to humans?

There are many studies on fine particles (PM2.5) and their fully negative effect on human health. There doesn't seem to have any positive aspect of inhaling particles, except very particular ones, but ...
2
votes
1answer
33 views

Why does a housecat (or other predator) play with it's food before killing and eating it? Does it make the food taste better?

I've read a couple people theorize that a cat playing with a mouse causes the mouse's body to be flushed with adrenaline before the final kill and that this adrenaline makes the meat more ...
1
vote
1answer
48 views
+50

Breakdown of energy expenditure at the level of a single cell

The metabolic rate measures how much energy an organism expends over a unit of time. Its breakdown for the human body in terms of its functions is well documented : so much for the heart, for the ...

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