Asked by Kayla Bryfogle on Jun 29, 2024
Verified
The XIST gene has been transcribed in ____.
A) the active X chromosome
B) the condensed Barr body
C) both X chromosomes
D) the maternal chromosome
E) the paternal chromosome
XIST Gene
A gene that is crucial for X-chromosome inactivation, a process that occurs in females to prevent the overexpression of X-linked genes.
Barr Body
A Barr Body is an inactivated X chromosome found in the cell nuclei of female mammals, visible as a dense mass.
- Acquire knowledge on the regulatory processes governing gene activity in both prokaryotes and eukaryotes.
Verified Answer
ZK
Zybrea KnightJul 02, 2024
Final Answer :
B
Explanation :
The XIST gene is transcribed on the active X chromosome (the one not undergoing inactivation) and produces RNA that coats and condenses that chromosome into the Barr body. Therefore, the XIST gene is transcribed in the condensed Barr body, which corresponds to the inactive X chromosome.
Learning Objectives
- Acquire knowledge on the regulatory processes governing gene activity in both prokaryotes and eukaryotes.
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