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Multiple Choice
What is the function of a centromere in the organization of DNA within the cell?
A
It is the region of a chromosome where the spindle fibers attach during cell division.
B
It is the site where DNA replication begins.
C
It is the part of the chromosome that protects the ends from degradation.
D
It is the area of the chromosome responsible for coding proteins.
Verified step by step guidance
1
Understand that a centromere is a specific region on a chromosome that plays a crucial role during cell division.
Recognize that during cell division, chromosomes need to be accurately segregated into daughter cells, and the centromere is essential for this process.
Learn that spindle fibers, which are structures that help pull chromosomes apart, attach to the centromere via a protein complex called the kinetochore.
Differentiate the function of the centromere from other chromosome regions, such as telomeres, which protect chromosome ends, and origins of replication, where DNA replication begins.
Conclude that the primary function of the centromere is to serve as the attachment point for spindle fibers during cell division, ensuring proper chromosome segregation.