Which of the following is a correct statement?
select one:
a. if you want to make a cdna library, it doesn't matter which tissue you isolate the mrna from.
b. if you want to make a genomic library, it doesn't matter which tissue you isolate the dna from.
c. if you want to make a cdna library, it doesn't matter which tissue you isolate the dna from.
d. if you want to make a genomic library, it doesn't matter which tissue you isolate the mrna from.

The correct answer will be option-B

Explanation:

cDNA library or complementary library is the DNA library constructed from the mRNA which is isolated from the specific tissue.  

The genomic library is constructed from the genome sequence of the organism by cutting the gene of interest or the whole genome with a restriction endonuclease and then inserting it into the vectors.

Since the genomic library includes the whole genome which is same in every cell and tissue whereas the cDNA library contains the coding genes expressed in the specific tissue only therefore, Option-B is the correct answer.

4tghyjuklertghyjukl

i believe it would be c: tons.