Match List - I with List - II.

	List - I		List - II
(a)	Metacentric chromosome	(i)	Centromere situated close to the end forming one extremely short and one very long arms
(b)	Acrocentric chromosome	(ii)	Centromere at the terminal end
(c)	Sub-metacentric	(iii)	Centromere in the middle forming two equal arms of chromosomes
(d)	Telocentric chromosome	(iv)	Centromere slightly away from the middle forming one shorter arm and one longer arm

Choose the correct answer from the options given below:

Concept:

• Chromosomes are defined as the genetic material present in all cells. 
• It is a  threadlike structure of nucleic acids and proteins found in the nucleus of most living cells, carrying genetic information.
• Every chromosome (visible only in dividing cells) essentially has a primary constriction or the centromere.
• Based on the position of the centromere, the chromosomes can be classified into four types, i.e.,  metacentric, acrocentric, submetacentric, and telocentric.

Explanation:

• In the metacentric chromosome, the centromere is in the middle of the chromosomes.
• The acrocentric chromosome has a centromere close to the end of the chromosome.
• In the submetacentric chromosome, the centromere is slightly away from the middle of the chromosome.
• Telocentric chromosome has terminal centromere.

Therefore, the correct answer is option 2.

Additional information:

• It is to be noted that sometimes a few chromosomes have non-staining secondary constrictions at a constant location. 
• This gives the appearance of a small fragment called the satellite.