You are investigating a mutant eukaryotic cell line that makes all of its mrnas much longer than the mrnas from normal cells. intrigued, you examine the proteins in these cells and note that many of them are either much longer or much shorter than the normal proteins from nonmutant cells. assuming there is just one mutant defect in these cells, which of the possibilities is most likely?

a stop codon is mutated
the enzyme that adds the poly-a tail is defective.
rna polymerase does not recognize the terminator sequence.
the spliceosome is nonfunctional.
the release factor is defective.

The correct answer is that the spliceosome is non-functional.

Explanation:

A spliceosome refers to a composite and large molecular apparatus found mainly inside the nucleus of the eukaryotic cells. The prime function of the spliceosome is to remove the introns from a transcribed pre-mRNA, that is, a kind of primary transcript.  

In case if the spliceosome machinery gets failed to function, the mRNA will not remove the introns, that is, the non-coding parts and retains it. This will eventually lead to the formation of longer mRNAs.  

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.