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which of the following is NOT used to generate a recombinant DNA molecule ? 1) DNA...

which of the following is NOT used to generate a recombinant DNA molecule ?

1) DNA ligase

2) RNA polymerase

3) restriction endonuclease

A mature mRNA is shorter than its corresponding gene because?

1)the mature mRNA contains only exons

2) not all segments of the gene are transcribed into RNA

3) DNA is double stranded and RNA is single stranded

4)the poly(A) tail has been spliced  

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