Match the column: Column I Column II A. Metacentric...

Match the column: Column I Column II A. Metacentric chromosomal 1. Middle centromere B. Sub-metacentric 2. Centromere slightly way from middle C. Acrocentric 3. Centromere close to its end D. Telocentric 4. Terminal centromere (a) $\mathrm{A}-1, \mathrm{~B}-2, \mathrm{C}-3, \mathrm{D}-4$ (b) $\mathrm{A}-2, \mathrm{~B}-1, \mathrm{C}-3, \mathrm{D}-4$ (c) A-1, B-2, C-4, D-3 (d) $\mathrm{A}-4, \mathrm{~B}-3, \mathrm{C}-2, \mathrm{D}-1$

Match the column:
Column I Column II
A. Metacentric chromosomal
1. Middle centromere
B. Sub-metacentric
2. Centromere slightly way from middle
C. Acrocentric
3. Centromere close to its end
D. Telocentric
4. Terminal centromere
(a) $\mathrm{A}-1, \mathrm{~B}-2, \mathrm{C}-3, \mathrm{D}-4$
(b) $\mathrm{A}-2, \mathrm{~B}-1, \mathrm{C}-3, \mathrm{D}-4$
(c) A-1, B-2, C-4, D-3
(d) $\mathrm{A}-4, \mathrm{~B}-3, \mathrm{C}-2, \mathrm{D}-1$

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Key Concepts

Relevance of Chromosomal Morphology

Understanding the classification of chromosomes based on centromere position is essential in genetics and cytogenetics. This knowledge aids in analyzing the structural integrity of chromosomes, identifying chromosomal abnormalities, and studying the mechanisms of cell division and genetic inheritance.

Centromere Position

The centromere is a specialized region of a chromosome that facilitates attachment of spindle fibers during cell division. Its location is crucial because it determines how the chromosome is divided into arms and affects the overall structure and function of the chromosome during cell division.

Chromosome Classification by Centromere Location

Chromosomes can be classified into distinct types based on where their centromere is located. Metacentric chromosomes have a centrally located centromere resulting in two arms of equal length; submetacentric chromosomes have a centromere that is slightly off-center creating one longer arm and one shorter arm; acrocentric chromosomes possess a centromere near one end, leading to one very short arm and one long arm; and telocentric chromosomes have the centromere at an extreme terminal end, which means that only one arm is effectively present.

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