alleryStart learning →A spindle fibre that has attached to a kinetochore is called a:
AContractile microfibre
BPolar microtubule
CAstral microtubule
DKinetochore microtubule
Answer & Solution
Correct answer: D. Kinetochore microtubule
1. The spindle contains fibres with different destinations.
2. Some reach a chromosome and grip it at a protein plate called the kinetochore.
3. A spindle fiber that has attached to a kinetochore is called a kinetochore microtubule.
4. Polar microtubules never engage a chromosome at all.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 11 'Meiosis and Sexual Reproduction', sections 11.1-11.2_
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