A gradual decrease in the size of the tail du | vedclass

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(A) During the metamorphosis of a frog,the tadpole undergoes significant physiological changes. The gradual reduction and eventual disappearance of th

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Programmed cell death

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(A) During the metamorphosis of a frog,the tadpole undergoes significant physiological changes. The gradual reduction and eventual disappearance of the tail is a classic example of programmed cell death,also known as apoptosis. This process is triggered by thyroid hormones ($T_{3}$ and $T_{4}$),which signal the cells of the tail to undergo controlled self-destruction,allowing the nutrients to be recycled for the development of other adult structures.

$A$ gradual decrease in the size of the tail during metamorphosis in the life cycle of a frog is a good example of:

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