You use two different fluorescently labeled antibodies to detect CenH3 and a telomere-binding protein in mouse cells. You find that the two signals are so close that they almost overlap at one of the two ends of each chromosome. From this observation, you conclude that

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Mouse chromosomes are acrocentric, meaning their centromeres are located near one end of the chromosome, which explains why the signals for CenH3 (a centromeric protein) and a telomere-binding protein are almost overlapping at one end.

You Use Two Different Fluorescently Labeled Antibodies to Detect CenH3