true or false

[houstongirl]

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(T/F) z line contracts
(T/F) m line contracts
(T/F) H-band contracts
(T/F) A-band contracts
(T/F) I-band contracts

 

[Ex_EE]

F - z line contracts; they move closer together but don't physically change size
F - m line contracts
T - H band contracts
F - A band contracts; no change at all
T - I band contracts