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== Egg yolks ==
In [[egg yolk]]:
: ''The yolk makes up about 33% of the liquid weight of the egg;''
Which one has more yolk by weight? A small egg or a large egg?
::Well, unless this is a trick question, 33% of a large egg would weigh more then 33% of a small egg, right?
:: houldn't that be ''33% of the mass of the egg''? The use of "liquid weight" rather than "solid weight" suggests that some sort of weight transference takes place upon cooking, which I don't imagine it does.
::::Is it not just discounting the mass of the shell? And I would assume it was talking about an uncooked egg; the percent could be different in a cooked egg, I suppose.
:::::Liquid weight vs. the shell weight perhaps?
:The question is a good one. The quote given is an estimate based on an overall average; it says nothing about how the actual percentage varies for different kinds of eggs. So, let's see. I'll assume we are only talking about chicken eggs; otherwise the question is far too complex. Poultry raising is a huge business, with lots of associated research going on, so the data ought to be available. A quick [http://www.google.com/search?q=%22percentage yolk%22 %22egg weight%22 Google search for "percentage yolk" "egg weight"] turns up hundreds of hits. This one] says that there is generally a negative correlation between egg weight and pertcentage yolk, although some studies have reported exceptions to this.
ummary: bigger eggs tend to have less yolk by weight, at least for chickens, although there are exceptions.
:: A friend of mine wants to make [[ice cream]]. I mean LOTS of ice cream for all of us gangs. We are thinking about how to make use of the unused egg white. I think it's better that we buy smaller eggs or a bottle of soybean [[lecithin]]
::: Make [[Meringue]]s! They are awesome with a blob of icecream and all you need is egg white and caster sugar. There are lots of other recipies that call for meringue - our article links to several of them.
== Egg yolks ==
In [[egg yolk]]:
: ''The yolk makes up about 33% of the liquid weight of the egg;''
Which one has more yolk by weight? A small egg or a large egg?
::Well, unless this is a trick question, 33% of a large egg would weigh more then 33% of a small egg, right?
::houldn't that be ''33% of the mass of the egg''? The use of "liquid weight" rather than "solid weight" suggests that some sort of weight transference takes place upon cooking, which I don't imagine it does.
::::Is it not just discounting the mass of the shell? And I would assume it was talking about an uncooked egg; the percent could be different in a cooked egg, I suppose.
:::::Liquid weight vs. the shell weight perhaps?
:The question is a good one. The quote given is an estimate based on an overall average; it says nothing about how the actual percentage varies for different kinds of eggs. So, let's see. I'll assume we are only talking about chicken eggs; otherwise the question is far too complex. Poultry raising is a huge business, with lots of associated research going on, so the data ought to be available. A quick [http://www.google.com/search?q=%22percentage yolk%22 %22egg weight%22 Google search for "percentage yolk" "egg weight"] turns up hundreds of hits. This one] says that there is generally a negative correlation between egg weight and pertcentage yolk, although some studies have reported exceptions to this.
ummary: bigger eggs tend to have less yolk by weight, at least for chickens, although there are exceptions.
:: A friend of mine wants to make [[ice cream]]. I mean LOTS of ice cream for all of us gangs. We are thinking about how to make use of the unused egg white. I think it's better that we buy smaller eggs or a bottle of soybean [[lecithin]]
::: Make [[Meringue]]s! They are awesome with a blob of icecream and all you need is egg white and caster sugar. There are lots of other recipies that call for meringue - our article links to several of them.
== Identifying Identical Twins' DNA...How Can One Tell Which Identical Twin May Have Committed A Crime? ==
:[[Identical twins]] have the same genetic material, as the article explains.
:How about good old fashioned [[fingerprint]]s? You might get lucky and find a SNP ([[Single nucleotide polymorphism]]) that is different between the twins but [[DNA fingerprinting]] would be useless with the current genetic markers
::They come from the same egg and sperm so there will not be SNPs between them. Now let me qualify that by saying that if spontanious mutation did arise during the development of one of them, it would not be in all their cells, only the cells that are descendant of that cell. You cannot tell them apart by genetic means. How can you tell which one committed a crime? It could be very tricky indeed. Even with other evidence like alibis, a defense lawyer could definately put together a case where you couldn't tell which twin was which. Tattoos, scars etc would be very useful. I'm sure there are some interesting case studies out there... Another interesting point - total bone marrow transplants (eg. for leukaemia) mean that the patient's blood has the same DNA as the donor. But there would likely be other markers in the blood - antirejection drugs maybe? [[User:Aaadddaaammm|Aaadddaaammm]] 22:58, 18 May 2007 (UTC)
:::"Somatic mosaicism" for SNP's is not uncommon but finding one that occured early enough in development would be very difficult (if not impossible). Hence my disclaimer, you might get lucky. The important observation is that it is wrong to assume that identical twins have identical DNA.
:ome genes undergo [[somatic hypermutation]] and [[V(D)J recombination|other types of modifications]] that make the DNA sequences in some somatic cells of each individual unique. Also, DNA modifications such as [[DNA methylation]] can be different between [[monozygotic twins==
APPLICATIONS OF NANOTECHNOLOGY
Over the past few decades, the fields of [[science]] and [[engineering]] have been seeking to develop new and improved types of [[energy]] technologies that have the capability of improving life all over the world. In order to make the next leap forward from the current generation of [[technology]], scientists and engineers have been developing '''Energy Applications of Nanotechnology'''. [[Nanotechnology]], a new field in science, is any technology that contains components smaller than 100 [[nanometer]]s. For scale, a single [[virus]] particle is about 100 nanometers in width
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