Question

In a particular organism, there are two similar genes called YFG1 and YFG2. YFG1 is expressed in the liver and

not in the pancreas, and YFG2 is expressed in the pancreas but not the liver. Neither YFG1 nor YFG2 is
expressed in the heart. Based on these observations, which of the following is most true?
A) Both YFG1 and YFG2 genes isolated from the heart would be DNase I sensitive.
B) The YFG1 gene isolated from the pancreas and the YFG2 gene isolated from the liver would be DNase I
sensitive.
C) Both YFG1 and YFG2 genes isolated from any tissue (the liver, the pancreas, and the heart) would be
DNase I sensitive.
D) The YFG1 gene isolated from the liver and YFG2 gene isolated from the pancreas would be DNase I
sensitive.
E) Neither YFG1 nor YFG2 isolated from any tissue (the liver, the pancreas, and the heart) would be DNase I
sensitive.

Answer 1

The YFG1 gene isolated from the liver and YFG2 gene isolated from the pancreas would be DNase I sensitive.

Step-by-step explanation:

Based on the given observations, the most true statement is that The YFG1 gene isolated from the liver and YFG2 gene isolated from the pancreas would be DNase I sensitive. This is because YFG1 is expressed in the liver and not in the pancreas, while YFG2 is expressed in the pancreas but not the liver. DNase I sensitivity is a characteristic of active genes that are accessible for transcription. Therefore, isolating the genes from their respective expressed tissues would result in DNase I sensitivity.