Types of Metaphase Chromosomes
From WikiLectures
| Chromosome | Characteristics |
|---|---|
| Metacentric | Centromere lies roughly in the middle of the chromosome. |
| Submetacentric | The centromere is positioned in such a way that p bundle branch structure are significantly shorter than bundle branch q. |
| Acrocentric | The centromere is shifted to one end of the chromosome; The P arm is very short. |
| Telocentric | The centromere lies at the end of the chromosome; The chromosome has only Q bundle arms (not found in humans). |
| Holocentric | Formations performing the function of a centromere are scattered along the entire length of the chromosome (not found in humans, rarely occurs e.g. in Caenorhabditis elegans). |
For an accurate distinction between metacentric, submetacentric, and possibly acrocentric chromosomes, the value of centromeric index is crucial[1].
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- ↑ KOČÁREK, Eduard – PÁNEK, Martin – NOVOTNÁ, Drahuše. Klinická cytogenetika I.: úvod do klinické cytogenetiky, vyšetřovací metody v klinické cytogenetice. 1.. edition. Karolinum, 2006. 120 pp. ISBN 80-246-1069-8.
