Question

"A trait may be inherited,but may not be expressed"justify the following statement.

Answer 1

some traits may be inherited but not expressed. The hidden trait is called recessive and the expressed trait is called dominant. For example: When Mendel crossed the tall pea plants of F1 generation, he found that tall and dwarf plants were obtained in F2 generation.

Answer 2

the two types of traits are dominant and recessive.
if an individual inherits a dominant trait from one parent and a recessive trait from the other parent, the dominant trait gets expressed while the recessive trait doesn't.
thus a person may inherit a trait but it may not get expressed it the trait is recessive and its counterpart is dominant