8. What is meant by the law of
use and disuse and by the law
of the transmission of
acquired characteristics?

Gap-fill exercise

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According to the law use and disuse
the of a body vary is
more or less . This rule is valid
example for features like muscular
mass and the of the bones.

The of the transmission of
characteristics in its turn
that parents could transmit their
offspring characteristics acquired the
law of use disuse.