You are studying a large eukaryotic gene that is 439,515 base pairs long. You find the polypeptide that this gene produces in liver cells is 46,771 amino acids long. Your colleague studies the function of this gene in brain cells, and finds the polypeptide produced in the brain is much larger – 61,438 amino acids long. How do you explain this difference? Possible Answers: A. The cell cycle of liver cells is much longer than that of brain cells. B. This is due to alternative splicing. in the brain C. There was a different complement of sequence-specific transcription factor binding sites in the CRM of the brain cells. D. There is no 5' cap added to the gene product from the liver cells.

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter19: Genomes And Proteomes
Section: Chapter Questions
Problem 1ITD: Below is a sequence of 540 bases from a genome. What information would you use to find the...
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You are studying a large eukaryotic gene that is 439,515 base pairs long. You find the polypeptide that this gene produces in liver cells is 46,771 amino acids long. Your colleague studies the function of this gene in brain cells, and finds the polypeptide produced in the brain is much larger – 61,438 amino acids long. How do you explain this difference?

Possible Answers:

A. The cell cycle of liver cells is much longer than that of brain cells.
B. This is due to alternative splicing. in the brain
C. There was a different complement of sequence-specific transcription factor binding sites in the CRM of the brain cells.
D. There is no 5' cap added to the gene product from the liver cells.
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