The centromere is difficult to sequence.    From Wordnet, Princeton University. 

Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or "arms.".    From Wordnik.com.  [Conservapedia - Recent changes [en]] Reference

To study the worm centromere, I should have been injecting DNA into the worm.    From Wordnik.com.  [Craig C. Mello - Autobiography] Reference

Looking at the dead centromere of chromosome 2 in a genome browser you see two things.    From Wordnik.com.  [The Rise of Human Chromosome 2: Beyond the Deme - The Panda's Thumb] Reference

To study the yeast centromere, I should have been working with the yeast sequences directly.    From Wordnik.com.  [Craig C. Mello - Autobiography] Reference

In maize the centromere and the nucleolus organizer on the nucleolus chromosome are relatively close together.    From Wordnik.com.  [Nobel Lecture The Significance of Responses of the Genome to Challenge] Reference

The cartoon in your first post is wrong as it shows a Robertsonian fusion in which one arm of the centromere is lost.    From Wordnik.com.  [The Rise of Human Chromosome 2: Beyond the Deme - The Panda's Thumb] Reference

In another species, blocks of heterochromatin are at the ends of chromosomes, but also positioned to each side of the centromere.    From Wordnik.com.  [Nobel Lecture The Significance of Responses of the Genome to Challenge] Reference

Watanabe Y (2005) Shugoshin: guardian spirit at the centromere.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

(SK1) repeats had been inserted near the centromere of chromosome.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Information about mapped genes flanking each centromere is presented in.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Zip1 staining pattern on cells classified by their centromere behavior.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

 Spindle microtubules interact with each chromosome at the centromere.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

The action point in regulating chromosomal segregation is called the centromere.    From Wordnik.com. Reference

Spindle is fully formed  Anaphase  Sister chromatids separate at the centromere.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

These first studies used a single time point analysis to evaluate centromere-coupling.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

It is the centromere on which the critical machinery for governing segregation is assembled.    From Wordnik.com. Reference

The distance from a gene to the centromere is referred to as the gene's locus or map location.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

This crossover repression is beneficial, as crossovers in centromere-proximal regions of budding yeast.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In addition, Sgo may sense the loss of tension at the centromere to generate a spindle checkpoint signal.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Chd1 mutant fly embryos does not interfere with centromere and kinetochore assembly, as the levels and localization of CenH3.    From Wordnik.com.  [Elites TV] Reference

Parallel samples were evaluated for centromere (Mtw1-13XMYC) organization in chromosome spreads by indirect immunofluorescence.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

As two arms of a chromosome are joined on either side of the centromere, two ribs are joined on either side of a vertebra (Figure 2).    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

The centromere of the chromosome becomes an elevator, a constant part of the infrastructure no matter what the style of the building.    From Wordnik.com.  [UConn Advance Headlines] Reference

(B) Dmc1 localization and centromere organization on chromosome spreads prepared from wild type meiotic cells (DDO45) as described in.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Using a newly developed assay, Lars and his colleagues were able to identify the protein that triggers the assembly of the centromere.    From Wordnik.com.  [Health News from Medical News Today] Reference

Waters JC, Mitchison TJ (2004) Vertebrate shugoshin links sister centromere cohesion and kinetochore microtubule stability in mitosis.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

First, the C-bands of all the chromosomes including the centromere coalesce in the center of the nucleus to produce a dense chromocenter.    From Wordnik.com.  [Evolution News & Views] Reference