Structure of a Chromosome
A chromosome is composed of two identical chromatids attached by a centromere. Each chromatid is made up of tightly wound DNA wrapped around histones. During cell division, spindle fibers attach to the kinetichore.
Biosphere logo and navigation buttons © 1999 Electric Rodent Web Design. All Rights Reserved. Advanced Placement Program is a registered trademark of the College Entrance Examination Board. AP is a trademark owned by the College Entrance Examination Board. No endorsement of any product is given.