LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the shape of Metacentric chromosomes?
A
J shape
B
L shape
C
V shape
D
Rod-shape
Explanation: 

Detailed explanation-1: -The metacentric chromosome is the chromosome having an X-shaped and in its center, a centromere is present which at the time of cell division will separate the two chromatids which will be having a V-shaped structure.

Detailed explanation-2: -The metacentric chromosomes take on the shape of a ‘V’ while this is happening. The telocentric chromosome is shaped like an ‘I, ‘ while the sub-metacentric chromosome is shaped like a ‘J.

Detailed explanation-3: -The chromatids moving towards opposite poles appear to be of various shapes like V-shaped (metacentric chromosomes), J-shaped (submetacentric chromosomes) or I-shaped (telocentric chromosomes), depending on the position of the centromere.

Detailed explanation-4: -Metacentric: When the centromere is located at mid of the chromosome. These are V-shaped. Sub metacentric: When the centromere is located near the centre or midpoint of the chromosome. These are L-shaped.

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