Centromere Structure & Chromosome Classification — NEET Biology
📚 Practice ConceptWhat is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.
Refer to the diagram showing different types of chromosomes based on centromere position (a–d). Which labelled chromosome represents a submetacentric chromosome?
View solution & NCERT explanation
Correct answer: B — b
Metacentric (a): Centromere in the middle, two equal arms. Submetacentric (b): Centromere slightly away from the middle, forming one short and one long arm. Acrocentric (c): Centromere close to one end, forming one extremely short and one very long arm. Telocentric (d): Centromere at terminal end. Thus, chromosome b in the figure is submetacentric.
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