Do you know where is DNA in human body?

Question

Where is exactly DNA in our body? I know that it is inside the nucleus, but can you tell the entire layer from top to bottom for body? What is inside the DNA? I know what it is DNA, but the problem is that I am confused about where is it in my body?

How about RNA?

What are the biggest difference between the DNA and RNA?

And if you have any information about this subject, please tell me because I am Biology major. Thank you.

Answer 1

Every cell in your body has a nucleus.  Therefore DNA is in EVERY CELL in your body.  Same with RNA.

There is nothing "inside" the DNA.  DNA is, of course, the protein that carries the "code" for what a cell is and does.

This is such a basic question, maybe you should rethink your major . . . .

Answer 2

i always thought that dna was in the nucleus of every single cell in your body  

Answer 3

DNA and RNA are very similar.

They are opposite copies of each other ;p

Firstly - DNA

It is a protein based strand, that contains the genetic code that creates YOU. DNA is coiled up and up and up, and is located in your chromosomes. Your chromosomes are located within the nucleus of EVERY SINGLE cell of yours. Hair cell, skin cell, brain cell, you name it.

Secondly - RNA

The RNA is almost exactly the same as the DNA, except one major difference. It is the EXACT opposite. So for example, If your DNA says:

"blue, blue, red, green"

Your RNA will be:

"red, red, blue, yellow"

As they are both VERY LONG (up to 300m) of protein, they are twisted into a double helix and joined by hydrogen bonds between the complementary bases; adenine and thymine or cytosine and guanine (red, blue, yellow, green).

The RNA is exported to other/new cells, that need a copy of DNA, why? to remake YOU. It unzips itself, and then copies the exact opposite image.

Hope this is helpful. I am studying it too :p

Goodluck,

SCE

Answer 4

As you said, DNA is inside the nucleus in your cells. Since cells are the basic structure of living things, it makes up your whole body. Meaning, DNA can be found through out your body, creepy huh? I'm not sure what you mean by "layer from top to bottom" though.

Also, DNA contains genetic information that is unique to everyone and it is the the that scientist use to identify you. I think the only exception is if you are a twin, then your DNA is the same as your twin. The DNA's genetic information tells the cells and stuff how to operate. However, DNA cannot leave the nucleus as it is too important to risk damage. But if it can't leave the nucleus, it can't pass out information;therefore, RNA is created.

RNA are created as an almost identical copy of DNA and is allowed to live the nucleus. There are many different types of RNA such as MessengerRNA which provide information to the the ribosome in the cell directly. Therefore, the job of RNA may vary.

The biggest (common) difference between RNA and DNA is their nucleotides. DNA and RNA is a strang of nucleotides which base pairs with another strang of nucleotides to create the double helix we are so familiar with. DNA have the four nucleotides known as "Guanine, Adenine, Thymine, and Cytosine." RNA has all of them EXCEPT Thymine as it is replaced with Uracil. This would be the most common different, besides the name which leaves out the "Deoxi-" part.

Answer 5

Here are some difference between DNA and RNA

DNA-double stranded, has A, G, C, T nucleotides, has deoxyribose sugar

RNA- single stranded, has A, U, G, C nucloetides, has ribose sugar.

DNA is in the nucleus. Transcription occurs to make a RNA copy from DNA. This mRNA is sent out of the nucleus where it will bind to a rRNA on a ribosome and it starts the translation or RNA into proteins through the use of tRNA.

The central dogma is : DNA-transcription-RNA-translation-protei...

This is how we get a phenotype from out genotype.

The tRNA has an anticodon on it that binds to codons and these codons are brought to the ribosome where a polypeptide will be made and turned into a protein.

*The DNA and RNA are made up of a sugar, phophates and has phosphodiester bonds.

In DNa the nucleotides are linked by hydrogen bonds so they can break easily. The backbone of DNA is made up of phosphodiester bonds because they are very strong, preventing damage to our DNA

*Every cell in our body except RBC's have a nucleus. The nucleus has the DNA that will be transcribed into RNA and sent out of the nucleus.

Answer 6

DNA is in the nucleus of every cell.

Answer 7

Your body is made up of cells.  The nucleus is a part (organelle) inside of each and every cell.  You will find DNA inside of the nucleus.  Thus, you literally have trillions of copies of your DNA inside of your body cells.  There is not a layer where it exists... it merely exists inside each cell.

RNA also exists inside of your cells, but since there are three types of RNA, you will find it both inside the nucleus of the cell and outside the nucleus of the cell, but it is always contained within the cell itself.

Answer 8

DNA

In most living organisms (except for viruses), genetic information is stored in the molecule deoxyribonucleic acid, or DNA. DNA is made and resides in the nucleus of living cells. DNA gets its name from the sugar molecule contained in its backbone(deoxyribose); however, it gets its significance from its unique structure. Four different nucleotide bases occur in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).

Chemical Structure of the DNA Nucleotides

These nucleotides bind to the sugar backbone of the molecule as follows:  

A   T   G   C  

sugar  phosphate  sugar  phosphate  sugar phosphate  sugar ...

The versatility of DNA comes from the fact that the molecule is actually double-stranded. The nucleotide bases of the DNA molecule form complementary pairs: The nucleotides hydrogen bond to another nucleotide base in a strand of DNA opposite to the original. This bonding is specific, and adenine always bonds to thymine (and vice versa) and guanine always bonds to cytosine (and vice versa). This bonding occurs across the molecule, leading to a double-stranded system as pictured below:

sugar phosphate  sugar phosphate  sugar phosphate  sugar ...

T  A  C  G  

¦  ÃƒÂ‚¦  ÃƒÂ‚¦  ÃƒÂ‚¦  

A  T  G  C  

sugar phosphate  sugar phosphate  sugar phosphate  sugar ...

In the early 1950s, four scientists, James Watson and Francis Crick at Cambridge University and Maurice Wilkins and Rosalind Franklin at King's College, determined the true structure of DNA from data and X-ray pictures of the molecule that Franklin had taken. In 1953, Watson and Crick published a paper in the scientific journal Nature describing this research. Watson, Crick, Wilkins and Franklin had shown that not only is the DNA molecule double-stranded, but the two strands wrap around each other forming a coil, or helix. The true structure of the DNA molecule is a double helix, as shown at right.  

The double-stranded DNA molecule has the unique ability that it can make exact copies of itself, or self-replicate. When more DNA is required by an organism (such as during reproduction or cell growth) the hydrogen bonds between the nucleotide bases break and the two single strands of DNA separate. New complementary bases are brought in by the cell and paired up with each of the two separate strands, thus forming two new, identical, double-stranded DNA molecules. This concept is illustrated in the animation below.

The Replication of DNA

Concept simulation - Reenacts replication of DNA.

(Flash required)

RNA

Ribonucleic acid, or RNA, gets its name from the sugar group in the molecule's backbone - ribose. Several important similarities and differences exist between RNA and DNA. Like DNA, RNA has a sugar-phosphate backbone with nucleotide bases attached to it. Like DNA, RNA contains the bases adenine (A), cytosine (C), and guanine (G); however, RNA does not contain thymine, instead, RNA's fourth nucleotide is the base uracil (U). Unlike the double-stranded DNA molecule, RNA is a single-stranded molecule. RNA is the main genetic material used in the organisms called viruses, and RNA is also important in the production of proteins in other living organisms. RNA can move around the cells of living organisms and thus serves as a sort of genetic messenger, relaying the information stored in the cell's DNA out from the nucleus to other parts of the cell where it is used to help make proteins.

A   U   G   C  

sugar phosphate  sugar phosphate  sugar phosphate  sugar ...

RNA  

Answer 9

All living organisms are made up of cells. The cell has a nucleus in the centre. DNA is in the nucleus of each and every cell.  It determines how the cell should function.