Asked by Brody Cullen on May 22, 2024
Verified
In female mammals, most of the inactive X chromosome becomes:
A) associated with histones
B) transcriptionally active
C) euchromatin
D) replicated
E) heterochromatin
Inactive X Chromosome
The inactive X chromosome is one of the two X chromosomes in female mammals that is condensed and transcriptionally inactive, a process known as X-chromosome inactivation.
Histones
Proteins that package and order the DNA into structural units called nucleosomes.
Transcriptionally Active
Refers to genes that are currently being expressed, with their DNA being transcribed into messenger RNA.
- Comprehend the roles of euchromatin and heterochromatin in the regulation of gene expression.
Verified Answer
RS
Rajeeb SamantaMay 25, 2024
Final Answer :
E
Explanation :
In female mammals, the inactive X chromosome largely becomes heterochromatin, which is a tightly packed form of DNA that is transcriptionally inactive. This process is part of X-chromosome inactivation, a mechanism to ensure dosage compensation between males (XY) and females (XX).
Learning Objectives
- Comprehend the roles of euchromatin and heterochromatin in the regulation of gene expression.