The kinetochore is a structure that:
1. Originates from centrioles and organises microtubule formation
2. Develops at telomeres and protects chromosome ends from degradation
3. Appears in nucleolus and participates in ribosome assembly
4. Forms at the centromere and serves as attachment site for spindle fibres
Subtopic:  Nucleus | Nucleus: Chromosomes |
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The centromere is situated close to its end forming one extremely short and one very long arm in:
1. Metacentric chromosomes              
2. Sub-metacentric chromosomes
3. Acrocentric chromosomes              
4. Telocentric chromosomes
Subtopic:  Nucleus: Chromosomes |
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