Question:

The type of chromosome in which the centromere is located at the end of the chromosome is known as

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Remember the shapes during anaphase: Metacentric (V), Submetacentric (L), Acrocentric (J), and Telocentric (I).
  • Acrocentric
  • Telocentric
  • Metacentric
  • Subterminal
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
Chromosomes are classified into structural types based on the position of the centromere, which dictates the relative lengths of their arms during cell division.

Step 2: Detailed Explanation:

- Telocentric: The centromere is located at the absolute end of the chromosome, giving it a single visible arm. During anaphase, telocentric chromosomes assume a rod-like ("I") shape.
- Acrocentric: The centromere is located near the end, producing one extremely short arm (p arm) and one long arm (q arm).
- Metacentric: The centromere is positioned in the middle, creating two arms of equal length and forming a "V" shape during anaphase.
- Submetacentric/Subterminal: The centromere is slightly off-center, producing unequal arms and an "L" or "J" shape.

Step 3: Final Answer:

A chromosome with its centromere at the terminal end is telocentric.
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