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Difference between genomic library and cdna library?

A cDNA (complementary DNA) library is a DNA library that has been created from mRNAs that are present in the cell. Since a cDNA is created from mRNA transcripts, that means that in Eukaryotic organisms there will be no introns or transcriptional factors present in the cDNA library, only exons. Only protein coding regions will be present in a cDNA library. This also means that a cDNA library is often times tissue specific. Since the expression of mRNAs will be different in different tissues of the organism it will appear different then a genomic library. Often times to offset this problem a cDNA library will be composed of different tissues (brain, liver, heart) to encompass a greater variety of the proteins that are expressed. A genomic library will contain all the exons, introns, and transcriptional factors that are not found in the cDNA library. **2/24/2011** cDNA library does contain exons, which is the protein coding regions.


Why you chose mRNA rather than genomic DNA for making a DNA library?

Complementary DNA (cDNA) is a doublestranded DNA version of RNA . Messenger RNA is a more useful predictor of a polypeptide sequence than DNA, because the introns have been spliced out. Scientists use cDNA rather than mRNA itself because RNAs are less stable than DNA.


What stage during the cell cycle are organelles and chromosomes copied?

i think its telophase


A strand of mRNA has the bases guanine-adenine-uracil Which amino acid corresponds to these bases?

Asp


What is the process of going from DNA to RNA called?

Transcription.During transcription the base sequence (genetic code) of part (a gene) of one strand of DNA is copied onto a strand of RNA as the RNA is synthesized.

Related Questions

Is cDNA complementary to mRNA?

Yes, cDNA is complementary to mRNA.


What is the full form of cdna?

CDNA = Complimentary Deoxyribose Nucleic Acid


How can I create cDNA in the laboratory?

To create cDNA in the laboratory, you can follow these steps: Extract RNA from the cells or tissue of interest. Use reverse transcriptase enzyme to convert RNA into cDNA. Purify and amplify the cDNA using PCR (polymerase chain reaction). Verify the cDNA sequence through sequencing techniques.


What is a cDNA library used for?

A cDNA library is used for complementary DNA. These DNA are collected as host cells, which can be found in the nucleus. Currently, cDNA libraries are lacking in the enhancer, intron, and several other categories.


The function of cdna?

hi In vitro we must converted the RNA to cDNA to diagnosis viral RNA in PCR. In vivo RNa viral infected the cell RNA converted to cDNA IN SIDE THE CELL BY REVERSE TRANSCRIPTASE therfore cDNA insertion in the DNA of cell infected thank you hi In vitro we must converted the RNA to cDNA to diagnosis viral RNA in PCR. In vivo RNa viral infected the cell RNA converted to cDNA IN SIDE THE CELL BY REVERSE TRANSCRIPTASE therfore cDNA insertion in the DNA of cell infected thank you


In genetics what does complementary DNA mean?

Complementary DNA (cDNA) is DNA that has been copied from an mRNA through a reverse transcriptase enzyme. cDNA contains a copy of the original DNA sequence that made the mRNA - but without the introns (as these are cut out to create mRNA).


What is the advantage of using cDNA library in molecular genetics?

The main advantage of cDNA library is that it contains only the coding region of a genome.


Does cDNA have a promoter region?

Yes, cDNA does not have a promoter region because it is synthesized from mRNA and lacks the regulatory elements found in genomic DNA.


What is the purpose of the cDNA synthesis?

The purpose of cDNA synthesis is to synthesize a copy of DNA from mRNA. This means that it is involved in the duplication of DNA that occurs when a cell divides. As a result, without cDNA synthesis, life would not exist as cells would not be able to divide.


Which processes are involved in making cDNA?

translation


What statement best compares the base sequence of an mRNA molecule with that of the cDNA made from the mRNA?

The base sequence of cDNA is complementary to the mRNA molecule from which it is synthesized. This means that the cDNA will have the same sequence as the mRNA, except that thymine in DNA is replaced with uracil in RNA.


Can clones isolated from cDNA libraries contain promoter sequences?

No, clones isolated from cDNA libraries do not contain promoter sequences because the cDNA synthesis process does not retain regulatory elements such as promoters. cDNA is made from mature mRNA and lacks the non-coding regions found in genomic DNA, including promoters. Therefore, clones isolated from cDNA libraries do not include promoter sequences.