Question

You are investigating an abnormal eukaryotic cell line that makes mRNAs nuch longer than the mRNAs from normal cells (that is, they have more nucleotides than sual). a) Assuming there is just one mutant defect in these cells, what could be the reason of that defect? a. b) Intrigued, you examine the proteins in these abnormal cells and note that many of them are either much longer or much shorter than the normal proteins from nonmutant cells. What could be the reason causing these results?

Answer 1

An abnormal eukaryotic cell line with longer mRNAs than normal cells could be caused by a mutation in the RNA polymerase gene. Abnormal proteins in these cells being longer or shorter could be due to mutations in the genes encoding those proteins.

Step-by-step explanation:

The reason for an abnormal eukaryotic cell line making longer mRNAs than normal cells could be a mutation in the RNA polymerase gene. This mutation would cause the mRNA molecules to have more nucleotides than usual.

Intriguingly, the abnormal proteins in these cells being either longer or shorter than normal could be due to mutations in the genes encoding those proteins. These mutations could result in abnormal amino acid sequences, leading to the production of longer or shorter proteins.