CharonY

For how long?

Also, there is the question whether you had cold or flu. The latter usually leaves you severely exhausted for weeks.

Later in life, having time management skills is very useful. In fact, even in school (and later college) it can make you much more efficient in getting things done. Starting early with such methods can help you to find a system that works best for you.

The described scenarios are highly unlikely, though I assume they are trying to be humorous. But if we are at it: 1957 some students try to get to school. A mob and the national guard try to prevent it. Mob violence prevents successful attendance. 2013 students go to school. Get bored.

"Most quotes on the internet are wrong or attributed to the wrong source" - Mahatma Ghandi

With prokaryotes there is extensive horizontal gene transfer, which complicates matter quite a bit. Generally the traditional species concept (as coined in the 40s) is not really useful. Instead other parameters based on DNA similarities are used. Traditional a 70% DNA-DNA hybridization has been used to classify prokaryotes, but nowadays phylogenetic trees based on 16srRNA sequences (or other conserved regions) are more common. With more and more whole-genome sequences it is probably only a matter of time until more global approaches are being used. The usual comment from my side on this issue is that species are always somewhat arbitrary delimiters that are useful in certain (many) situations, but are not a perfect reflection of nature under all circumstances.

It is not a closed system. The formation of bonds releases energy, i.e. the folded protein is in a lower energy state than the unfolded one (in aqueous medium).

There are numerous metabolites that act as signal for energy and/or nutrient deficiency. This may include ATP itself or cAMP, for example. Nutrients are generally sensed via receptors on the cell surface which trigger signaling cascades that in turn control cell motility.

Most people do not enjoy these "discussions" as there is usually a distinct lack of knowledge that has to be cleared before any discussion could start. Do to various reasons, creationist are resilient to information, however. With regards to the genes, that discussion is mostly worthless, if one does not understand the nature of genes and how e.g. similarities are assessed. All human share the same genes, for example, but there are different allelic variances. That being said, all organisms share a large amount similar genes, though the precise number is not clear as we do not know the precise number of genes in humans either (estimates are in the order of 20-25k). But the large overlap between organism is very much expected for evolutionary reasons as most higher eukaryotes for example have very similar basal metabolic activities, cellular structure etc. Another thing to consider that fruit flies only have about 15k genes. So if all of them were homologous to human genes it would account to roughly 60% of the human genes. This just highlights that these comparisons without proper context are pretty much worthless.

Yupp, it should be added that they are the result of the insertion of a fluorescent protein such as GFP or dsRed.

That question is somewhat meaningless without context. Even point mutations that are not neutral (i.e. the altered genetic code yields the same amino acid, but even then there are certain exceptions) will at the very least result in an altered phenotype on the biochemical (i.e. protein) level. The effects increase with the amount of changes (a knockout will have stronger effects, for example). Whether these has any further effects depends on how and at which resolution you look at the organism. For example, if your criterion is survival, under certain environmental conditions a complete deletion may be harmless (e.g. if it disrupts some synthesis reactions, but you feed the fly the nutrient externally it may not matter), but looking at it on the biochemical level, the disruption would be fairly obvious.

That would be incredibly silly as it would have no connection to evolution whatsoever.

Well, according to standard language use GMO specifically refers to genetically engineered organisms using a set of techniques that directly alter genetic material. Mutation breeding of plants is the only thing coming close but is usually specifically excluded (as well as regular breeding). Edit: and sorry, no pet giraffes in the foreseeable future.

Here is the thing, there is no Native American DNA. You will have mix of alleles (gene variants) that are found in almost all human groups (with very few exceptions in very small, highly inbred populations, maybe). In your population (depending on how isolated it is) certain combinations may be more common than in other populations. Also note that the composition of alleles in each population are not static and have changed massively over time. This is not only due to interbreeding but also due to selection and changes thereof. And example could be the accessibility of new food sources.

Some conservative estimates place bacteria around 10E30 cells (based on soil estimates). Further, most larger organisms often carry a multitude of bacterial cells relative to their own with them (i.e. in a single human bacteria are about 10-20 times the number of cells found in a human!). Taking this together I would estimate the rate of bacteria much higher than 70% of all organisms (especially assumin that archaea and bacteria are both meant by it).

Realistically this would have a higher chance of success by breeding rather than genetic manipulation. The current scope is usually limited expressing a limited number of proteins transgenetically, which would not work for a complex phenotype such as size.

The first group, as you put it, refers to the knowledge of chemistry and physics, while acknowledging that there is a knowledge gap somewhere. The second just assumes that there is something there but has not inkling as to what nature it may be. The first assumption and any hypotheses derived from there can be subjected to scientific scrutiny. The latter provides no explanatory power whatsoever. However, this has been repeated ad nauseam.

I am not familiar with anti-depressants, but for other forms of medication there are genetic markers that are associated with a lower efficacy of certain drugs. However, it would only be worthwhile if the genetic link is strong and the MD should be able to provide either FDA (or equivalent) and/or studies that have established that link (i.e. more than a single exploratory study). With regards to the actual DNA analysis, again I would go for approved diagnostic suites. Companies that make private analyses are often not approved as a diagnostic tool, mostly because there is little info with regards how accurate their analyses are. Note that most do not actually sequence but use a much cheaper but more error prone hybridization assay. If the MD is unable or unwilling to discuss these things in detail, it may be time to look for a different practitioner,

Typical methods include re-isolation from gel, chromatography and equilibrium density centrifugation. Standard centrifugation would not allow separation.

The dark stains? Bromphenol blue.

As it was implied, promise of authorship is not worth terribly much. For starters there are no guarantees that a work will ever yield publishable results and even if there is one and even if authorship is granted, it may be at best at limited usefulness. Based on the available information there does not appear to be a good reason to stay, unless you are really considering joining the lab at some point. But then you should have more info on the likelihood of funding etc. Personally, I would not have made any promises unless I have the money (and actually want someone to join). And if it is dependent on external factors such as funding I would make it very clear before taking anyone in for volunteering. Problem with grants is that there is no way of predicting success but promising something and going back on this promises is usually not indicative of a good work relationship.

Unfortunately, loopholes are really the big issue here. For the most part it appears to be voluntarily, something that has so far not impacted antibiotics use in livestock very much. And very unfortunately farms are the single biggest source of antibiotics release into the environment. Costly changes in the the way livestock is being raised are likely consequences, and I fear most farmers would no go that route.

The energy flow is usually used in the context of energy loss during each step of the flow. I.e. the directionality does not refer to the cyclic nature of ecosystems (in which microorganisms can play multiple roles, for example), but rather to the steps of biomass consumption As such a given species can be at different levels depending on how the food chain is built. That, in turn depends on the aspects and details of a given ecosystem one tries to describe. Cycling is usually discussed in relation to material but not to energy (i.e. energy flow) as energy is obviously not recycled, but gradually lost at each step as heat (however the food web is structured).

It is based on the very definition. Generally speaking, it refers to the energy flow through a food chain. During each step of consumption energy is obviously lost and there is no way that you can "unconsume" something.

That is a very unlikely scenario. Within the Ashkenazi Jews social status was largely coupled to family lines and there is no evidence that e.g. higher intelligence would improve reproductive success. Moreover, as it is a very closed society there is only a small gene pool on which selection could work. If there was a genetic basis a founder effect would be more likely. At the very least the high incidence of certain genetic diseases is probably the result of that. On the other hand, Ashkenazi Jews highly value scholarship, similar to many Asian cultures, which incidentally also score above average on IQ tests. Edit: I vaguely remember a few papers on this, but IIRC the one paper that argued for selection was more speculative and was based on conjecture instead of hard data (which is admittedly not an easy task).