DNA and RNA arrived from space.
"Because meteorites represent leftover materials from the formation of the solar system, the key components for life - including nucleobases - could be widespread in the cosmos. As more and more of life's raw materials are discovered in objects from space, the possibility of life springing forth wherever the right chemistry is present becomes more likely," said Mark Sephton, professor of Earth science and engineering at Imperial College London and co-author of the study."We believe early life may have adopted nucleobases from meteoritic fragments for use in genetic coding which enabled them to pass on their successful features to subsequent generations," said the leader of the study, Zita Martins of the Department of Earth Science and Engineering at Imperial College London.
In 1969, a meteorite fragment, known today as the Murchison meteorite, crashed in the Australian outback. A thorough analysis, following its discovery, showed that it contained uracil and xanthine molecules (nucleobases), which are building blocks for genetic materials made up of a heavy carbon isotope. On Earth, such molecules contain only light carbon isotopes.
However, these two molecules are just a few of many others found in the respective fragment. "There are about 70 different amino acids in the Murchison meteorite. About six or so are the same kinds of amino acids associated with life on Earth," said David Deamer from the University of California.
The uracil molecule is one of the four bases for the RNA molecule, therefore it is invaluable to life. Deamer points out that, although these molecules have been proven to originate in space, they could have been developed on Earth just as well. Nevertheless, the proportion of molecules originating only in space or only on Earth is currently unknown.
"We don't know the answer yet. Most people would say that both contributed to the organic compounds available on Earth, but we don't know with certainty how much of one compared to the other," said Deamer.
between 3.8 and 4.5 billion years ago, when primitive life first appeared, the Earth and Mars could have been literally bombarded with meteorites similar to the Murchison, thus studying the impact they would have had on different planets could reveal how life evolved in the solar system.
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9:55 PM | Labels: DNA ADOPTION NETWORKING, GENE DECODING SITES, genetics, information on dna, information on rna, PROTEIN SYNTHESIS |
Messenger RNA Synthesis
During transcription, RNA polymerase makes a copy of a gene from the DNA to mRNA as needed. This process is similar in eukaryotes and prokaryotes. One notable difference, however, is that prokaryotic RNA polymerase associates with mRNA processing enzymes during transcription so that processing can proceed quickly after the start of transcription. The short-lived, unprocessed or partially processed, product is termed pre-mRNA; once completely processed, it is termed mature mRNA.
Messenger ribonucleic acid, commonly called messenger RNA or mRNA, is an RNA molecule that encodes a chemical "blueprint" for the synthesis of a protein. Messenger RNA contains a copy of the genetic data contained on a strand of DNA. Ribosomal ribonucleic acid (ribosomal RNA or rRNA) helps to form the ribosome itself.
Same like messenger RNA (mRNA), ribosomal RNA does not transmit genetic information. Instead of this it combines with proteins to create a structure that systematically transforms mRNA into proteins.
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9:32 PM | Labels: DNA, GENE DECODING SITES, MESSENGER RNA, MESSENGER RNA SYNTHESIS, MRNA, PROTEIN SYNTHESIS, RNA, TYPES OF RNA, WHAT IS DNA, WHAT IS RNA |
WHAT IS MRNA (MESSENGER RNA) ????
A atom of RNA that serves as a arrangement for protein synthesis. mRNA is transcribed from a gene and again translated by ribosomes in adjustment to accomplish a protein. Each set of three bases, alleged codons, specifies a assertive protein in the arrangement of amino acids that comprise the protein. The arrangement of a fiber of mRNA is based on the arrangement of a commutual fiber of DNA.
Messenger RNA comes in a advanced ambit of sizes absorption the admeasurement of the polypeptide it encodes. Best beef aftermath baby amounts of bags of altered mRNA molecules, anniversary to be translated into a peptide bare by the cell.
Many mRNAs are accepted to best cells, encoding "housekeeping" proteins bare by all beef (e.g. the enzymes of glycolysis). Other mRNAs are specific for alone assertive types of cells. These encode proteins bare for the action of that accurate corpuscle (e.g., the mRNA for claret in the precursors of red claret cells).
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9:24 PM | Labels: DNA, DNA ADOPTION NETWORKING, GENES, IONIZING RADIATION ON DNA, MESSENGER RNA, MESSENGER RNA SYNTHESIS, MRNA, PROTEIN SYNTHESIS |
DNA GENE DECODING SITES
While these adaptation sites accommodate the befalling for DNA Acceptance Networking, that seems to be a by-product of their capital function, which is to break your DNA. For the acceptance world, casework like this accept amazing implications, including:
(i) In the majority of adoptions in the world, there is little or no advice about the bearing father. This includes calm adoptions, as able-bodied as adoptions from added genitalia of the world. Adaptation your child's DNA will accommodate you with cogent advice about the bearing ancestor and the bearing mother. The websites affirmation they acquiesce you to attending 20 or 40 years into the approaching at cogent DNA markers that will affect your child's bloom (such as pre-disposition to assertive diseases).
(ii) Once registered with some sites, you will be automatically brash over the abutting 10, 20 or 30 years, as medical science makes new discoveries and advances.
(iii) In some situations DNA adaptation may become accessible as allotment of pre-adoption medical and amusing advice about the child. Currently, parents accept bound medical information, photographs, and sometimes a video. Perhaps in the approaching a DNA besom will become allotment of this pre-adoption advice package.
(iv) As countries become added careful about whom may accept their accouchement (such as China) will they demand DNA tests of the adopting parents? Adopting Parents already accept to accumulation medical and lab letters as allotment of a abstracts for all-embracing adoption. Are DNA letters next?
These websites will accompany abundant opportunities, but additionally abundant quandaries. We will no best accept the botheration of not knowing, but instead accept the accountability of whether we demand to apperceive in the aboriginal place. We will apperceive whether our accouchement are agreeable to assertive ancestry or talents, athletics, music or languages, and we'll animate them to accompany assertive paths. I accept afresh declared these websites to clients, accompany and relatives. It is absorbing how abounding bodies accept said, "But do you absolutely demand to apperceive this information?". Clearly, some bodies would rather not apperceive and aloof let the approaching unfold.
This is a web-based account that helps you accept your DNA. Send in a sample of your child's saliva and see how the decoded genes announce your child's future. This armpit is partly adjourned by Google. The amount for a DNA assay is $999, and you will accept a address allegory about 600,000 DNA checkpoints.
At this time their account is alone accessible in the USA, Europe and Canada, although it will aggrandize in the approaching to added countries. In acknowledgment to my catechism to this armpit as to whether adopting parents could use it to accept the DNA decoded for a adolescent proposed to them for adoption, the acknowledgment was "Our account is not advised to be acclimated for abiogenetic screening purposes."
Doug Chalke
Executive Director
Sunrise Family Services Society
Vancouver, February, 2008
www.SunriseAdoption.com
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11:03 AM | Labels: DNA, DNA ADOPTION NETWORKING, GENE DECODING SITES, GENES, IONIZING RADIATION ON DNA, PROTEIN SYNTHESIS, RNA, WHAT IS DNA |
WHO CAN USE DNA ADOPTION
(i) Biological parents who placed a adolescent for acceptance (or conceivably alone a child) can attending for their adolescent common with one registration.
(ii) Aback adopted accouchement become teenagers or adolescent adults, they generally demand to acquisition out added about their roots. While they may not acquisition their bearing parents immediately, they may locate added relatives. In adjustment to analyze siblings, half-siblings, cousins or grandparents, it will be all-important for one of their biological parents to annals on the armpit (At this time you charge a ancestor to additionally annals in adjustment to say definitively that two ancestors are siblings). Those ancestors may about-face up anon or a decade or two afterwards as new ancestors annals on the site.
(iii) Adopted Adults. Life is long, and at some point aback adopted accouchement accept become adults, they frequently demand to attending for their roots. While adoptive parents today usually explain to their accouchement that they were adopted, that has not consistently been the case, nor is it universally true. As a result, individuals registering on these sites, who had no abstraction that they were adopted, may be in for a surprise.
(iv) Adoptive parents who demand to acquisition siblings, bearing parents, or added ancestors of their adopted adolescent can annals their child. Parents registering accouchement over 13 crave the child's acceding to do this. In fact, it appears that analytical adopted teenagers could acceptable annals themselves if they accept admission to $149.
(v) Acceptance Agencies may demand to accommodate advice about DNA Acceptance Networking in their acceptance apprenticeship programs. It's a absoluteness analysis for parents who accompaniment they demand to adopt, but never demand annihilation to do with the bearing ancestors and that's why they demand to accept overseas. At some point their adolescent may annals and acquisition ancestors in added countries.
Not anybody complex in acceptance will demand to participate in this common agreement in affiliated research. While best adopted accouchement demand to apperceive who their biological parents are, this is not consistently true. However, for those who do demand to apperceive area their adolescent is, or who their biological ancestor is, these websites are already bearing after-effects and matches. An ABC News video clip, which is accessed by a articulation on the GeneTree.com home page, includes an account with an adopted developed who alone knew his bearing date and place, and afterwards begin ancestors in several genitalia of the world.
Since DNA Acceptance Networking will about accommodate a common acceptance alliance registry, bodies should anticipate anxiously afore registering. While anyone can use one of these sites, appropriate precautions charge to be taken aback they are acclimated by the acceptance community. Some individuals may ambition to access counselling afore registering. Acceptance Alliance Registries are amid in best jurisdictions in North America and they frequently accommodate counselling to the parties both afore and afterwards a reunion.
What makes these sites so altered from the sites declared abutting is that no abiogenetic advice is accustomed aback to you (the participant).
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10:59 AM | Labels: DNA, DNA ADOPTION NETWORKING, IONIZING RADIATION ON DNA, PROTEIN SYNTHESIS, RADIATION, RNA |
DNA ADOPTION NETWORKING SITES
There are two new kinds of sites in accurate that assume advantageous to the acceptance community. They are absorbing because both kinds are the aboriginal of a new brand of websites. The aboriginal are DNA amusing networking sites; the additional are primarily gene-decoding sites.
DNA Adoption Networking is a allotment of a new internet account the New York Times has alleged Zygotic Amusing Networking. These networking casework admittance users to body a amusing arrangement about aggregate abiogenetic material. Similar to Facebook, users are able to column photos, amend their profiles, blog, and accelerate letters to anniversary other. Added importantly, for adoptive families they facilitate searches for ancestors and acquiesce associates to analyze abiogenetic makeup.
Basically, you assurance up with the service, do a audacity swab, accelerate it in, and a allocation of your abiogenetic architecture gets compared to others on the databank. You or addition abroad (somewhere in the world) can again bang on a map that shows a brand for every added affiliate about the apple who shares abiogenetic markers begin in your DNA profile.
Perhaps alike added amazing is that the creators of these sites accept that we are alone at the alpha of their abilities and usefulness. Experts accept that every new analysis in the acreage of analysis will accommodate the users with new advice about their identities.
A. DNA ADOPTION NETWORKING SITES
1. www.GeneTree.com
This service:
operates world-wide;
is accessible to accept and accessible to use;
is chargeless (except for the DNA besom accumulating kit $99 - $149);
matches ancestors (such as cousins), which abundantly increases the affairs of award out added advice about the child's ancestors of origin.
The armpit is allotment of a common affiliated and abiogenetic analysis project. Anyone who joins is a actor in this project. (Unfortunately, this advice is not fabricated bright on the website until a apprentice orders a DNA besom kit and is presented with a 6-page arrangement to sign.) Parents who don't like the accommodation of actuality allotment of a analysis activity may demand to canyon on registering. Others will be blessed to be allotment of a DNA analysis activity that additionally provides the befalling for chargeless DNA Acceptance Networking. This armpit is headquartered in Salt Lake City, Utah, which is already accepted as the better centermost of affiliated analysis in the world. Clearly, they demand to accomplish it bigger.
When you adjustment your DNA besom kit ($149) you will be asked to assurance a 6-page contract. Read it carefully. It has some absorbing terms, including:
you are a actor in a analysis study;
no abiogenetic advice is provided aback to you;
you can abjure from the abstraction at any time and accept your advice deleted;
while this armpit will bout two autonomous users of the armpit calm if they want, the armpit will not get complex in accouterment acceptance or ancestors advice (that it may apprentice of) to anyone.
The website has a "Facebook" aspect to it, except you are networking with bodies you allotment agnate DNA with about the apple instead of your called friends. Participants set their own akin of aloofness on this site. In added words, you can annals your DNA and again set aloofness ambit as to the acknowledgment of advice and whether you demand acquaintance with added associates of your continued family. Of course, in accession to aloofness concerns, the abstraction of adoptive families about the apple registering their DNA on a adept database absolutely has a "Big Brother" feel to it. As a result, this account may not address to everyone.
2. www.dnaancestry.com
This armpit is allotment of www.ancestry.com and allows you to use DNA to look for ancestors, clans and by surname groups. www.ancestry.com is an accustomed affiliated analysis armpit additionally headquartered in Utah. It already has a user abject of 15 million, of which 3 actor accept acquaint their searchable ancestors trees. It is the internet's better family-history archive. The analysis kit costs $149 to $179, depending on how adult you demand the after-effects to be.
3. www.familytreedna.com
This website claims to accept the better DNA databases in the acreage of Abiogenetic Genealogy (178,000 records). Their website includes tutorials on the use of your DNA. It additionally has a DNA user's appointment which has posts from adoptees who accept had capricious degrees of success at award relatives. The tests amount $149 to $199.
4. www.a-chinadnaproject.org
Although this armpit is not yet operational as a registry, it does accept absorbing things to say. It is a armpit account account and cerebration about the credibility aloft there. In accession to looking for relatives, a second, appropriately important mission of the website, is to actualize a voluntary, bearding DNA database that will accommodate advice that could account all Asians of Chinese descent. The China Adoptions DNA activity states abundant times on this website that it is not yet underway back it has no funding. It worries about the costs to parents and the amount of accouterment the service. Some adopting parents will demand to delay and see if this adoption-oriented website becomes operational because of the added safeguards that accept been created for the acceptance community.
5. www.tracegenetics.com
This armpit has an all-encompassing FAQ breadth that will advise the clairvoyant a lot about this breadth of science in barefaced language.
It offers testing for both the child's affectionate and benevolent lineage. It again issues a address based on the allotment of ancestor from anniversary of the world's biogeographical areas.
This armpit claims to accept the better Native American DNA database in the world.
This website will additionally accommodate you with custom DNA projects. You can clothier your genomic requests to what you want.
GUIDE TO DNA TESTING LABS
If you’re planning to do a DNA test, hundreds of DNA testing labs are acquisitive to booty your money. Some of them are account every penny they allegation for their services. But abounding added are not.
In my acceptance attending adventure I acclimated several types of DNA testing labs. So I abstruse a lot during that time. And I’ve acquired alike added ability back I absitively to actualize this web site.
Except for some anterior and absolute topics, I accept organized the antithesis of this folio by DNA assay type. If you’re not absorbed in some types, aloof annal bottomward until you acquisition the blazon you need.
Sample Collection Methods
Today, best DNA testing labs use DNA samples from your mouth. Methods accommodate DNA swabs to aggregate beef from central your cheek, and discharge tubes or mouthwash to aggregate saliva. Claret testing is no best necessary.
For abounding tests, you don’t alike accept to appear into a lab. Home DNA tests are broadly used, except as acclaimed below.
Paternity Testing
The parent-child accord is the abutting one possible. As a result, ancestors testing can acquaint you that a man is a child’s ancestor with 99.99% certainty. If DNA testing shows that a man is not the father, you can be 100% assertive of that fact.
Situations involving adolescent custody, adolescent support, bequest and clearing crave acknowledged ancestors tests. In those cases the courts crave all parties to appearance up in being at the DNA testing labs. Then lab cadre will affirm anniversary person’s identity, aggregate the samples, and chase a acknowledged alternation of aegis action through assay and reporting.
Home DNA assay kits for ancestors testing are available. But you should alone use them back the assay is alone for claimed knowledge. Tests done at home are not acknowledged ancestors tests.
For ancestors tests (and the beneath accepted maternology tests) you should accept an AABB-accredited laboratory. AABB is the American Association of Claret Banks. Alike admitting DNA testing labs rarely use claret anymore, this alignment still ensures class quality.
Another acceptance to attending for is ISO 17025. This is the all-around accepted for the abstruse adequacy of arrangement and testing labs.
Recommended Labs for Ancestors Testing
You can attending for a lab that does ancestors tests and meets these standards. Be abiding to analysis out the afterward two labs that I apperceive able-bodied abundant to alone recommend:
f you charge a acknowledged test, again the area of a acceptable testing armpit can be an important factor. If the activated parties are in altered locations, allotment a aggregation like those above, which accept a ample arrangement of sampling sites, can abbreviate biking expenses.
Close Accord Testing
If the parents are not accessible for paternity/maternity testing, you may still be able to actuate whether or not two bodies are related. For example, I knew my ancestor was one of bristles brothers. By comparing my DNA with that of a adolescent from anniversary brother, I was able to actuate which man was my father. To apprentice how I did this see my DNA Sibling Analysis page.
In accession to ancestors and bisected siblings, you can generally administer this blazon of abutting accord testing to grandparents, aunts, uncles, and cousins. But you charge to analysis anxiously with the DNA testing labs that action such tests. And after-effects cannot be as assertive as ancestors testing.
See the Accord Testing folio of this web armpit for two methods and my recommended labs for accepting this done.
Family Tree DNA Testing
If you’re attractive to DNA for ancestor or acceptance attending purposes, I acclaim you use Family Tree DNA. To apprentice why I acclaim this lab, see my FTDNA Review page.
Ethnic or Age-old Ancestor Testing
Testing with Family Tree DNA will additionally acquaint you article about your age-old ancestor by admiration your haplogroup. But if you demand a bigger breakdown, i.e. to abode your ancestors in a specific country, indigenous accumulation or tribe, you will charge added tests.
Some companies specialize in allegory assertive populations, such as Native Americans or African Americans. You can additionally adjustment autosomal testing to admeasurement the aggregate backgrounds of all your ancestors.
To apprentice added about these tests and the DNA testing labs that action them, see my Indigenous DNA Testing page. Be abiding to apprehend all the credibility I accomplish about the limitations of such testing.
No amount what blazon of DNA testing you are considering, attending carefully at anniversary company’s adeptness to accommodate claimed chump service. They charge accept a appear blast cardinal area you can ability absolute bodies to acknowledgment your questions afore and afterwards you adjustment a test.
Most companies acquiesce you to adjustment and pay for a DNA analysis online. But I advance you acquisition a buzz cardinal and analysis it afore you abode the order.
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10:57 AM | Labels: DIFFERENCE BETWEEN DNA AND RNA, DNA, DNA ADOPTION NETWORKING, GENETIC CODE DECODING, IONIZING RADIATION ON DNA, PROTEIN SYNTHESIS, RADIATION |
WHAT IS PROTEIN SYNTHESIS ????
Hi This is all about protein synthesis.........
Protein amalgam is the action by which alone beef assemble proteins. Both deoxyribonucleic acerbic (DNA) and all types of ribonucleic acerbic (RNA) are complex in this process. Enzymes in the cell's basis activate the action of protein amalgam by unwinding the bare breadth of DNA, so that RNA can be made. The RNA forms as a archetype of one ancillary of the DNA strand, and is beatific to added areas of the corpuscle to aid in the bringing calm of altered amino acids that anatomy proteins. Protein amalgam is so alleged because proteins are "synthesized" through automated and actinic processes in the cell.
Once the fiber of RNA has been fabricated in the nucleus, it is alleged agent RNA (mRNA). The mRNA exits the basis through tiny openings alleged nuclear pores, and moves into the beyond breadth of the cell, accepted as the cytoplasm. Once it exits the nucleus, the mRNA is fatigued against a anatomy accepted as a ribosome, which serves as the cell's assignment base for protein synthesis. At this point, alone one sub-unit of the ribosome is present.
As the mRNA binds to the ribosome sub-unit, it triggers the access of addition fiber of RNA, alleged alteration RNA (tRNA). The tRNA fiber looks for the able abode to bind to the mRNA, and back it finds it, it attaches to the mRNA, while captivation an amino acerbic on one end. Back this occurs, the added sub-unit of the ribosome arrives to anatomy a complete structure. As the ribosome surrounds the strands of RNA, addition fiber of tRNA approaches. This fiber is accustomed addition amino acid, and is altered from the first. Again, the tRNA looks for the able abode to bind to the mRNA.
When the additional fiber of tRNA is in abode with its amino acid, the two amino acids bind calm with advice from the ribosome, as able-bodied as cellular activity in the anatomy of adenosine triphosphate (ATP). This arrangement repeats itself, and the alternation of amino acids grows longer. Back the amino acids accept all been placed in the actual sequence, the alternation folds into a three-dimensional shape. Back this has occurred, the protein is complete.
Once the protein has been auspiciously made, the two sub-units of the ribosome separate, to be abutting afresh for after use. The action of protein amalgam takes abode in abundant ribosomes throughout the cell. A corpuscle which is operating calmly can amalgamate hundreds of proteins every second.
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10:51 AM | Labels: DNA, IONIZING RADIATION ON DNA, PROTEIN SYNTHESIS, RADIATION, RNA, WHAT IS DNA, WHAT IS RNA |
- CADMIUM EFFECTS ON DNA
- CANCER
- cancer due to radiation in dna
- CANCER GENES
- DIFFERENCE BETWEEN DNA AND RNA
- DNA
- DNA ADOPTION NETWORKING
- dna codes
- DNA HELPS TO FIND CRIMINALS
- DNA ISOLATION
- DNA PATERNITY
- DNA REPLICATION
- DNA REPLICATIONS
- DNA STRUCTURE
- DNA SYNTHESIS
- GENE CF
- GENE DECODING SITES
- GENES
- GENETIC CODE DECODING
- genetics
- genomic code
- information on dna
- information on rna
- IONIZING RADIATION ON DNA
- MESSENGER RNA
- MESSENGER RNA SYNTHESIS
- MRNA
- PROTEIN SYNTHESIS
- RADIATION
- RADIATION EFFECTS ON DNA
- ribosomes
- RNA
- RRNA
- tRna
- TYPES OF RNA
- WHAT IS DNA
- what is gene decoding
- WHAT IS RNA