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What is present in the centre of each ‘I’ band?

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in Biology – Class 11 by (272k points)
What is present in the centre of each ‘I’ band?

(a) ‘H’ line

(b) ‘A’ line

(c) ‘M’ line

(d) ‘Z’ line

I got this question during an interview.

The above asked question is from Locomotion & Movement in portion Locomotion and Movement of Biology – Class 11

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Correct option is (d) ‘Z’ line

The best explanation: The ‘I’ band or the isotropic band is also known as the light band. It contains the protein actin. The ‘Z’ line is present in the centre of each ‘I’ band which bisects it. The ‘Z’ line is an elastic fibre.

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