Question

A trait may be inherited, but may not be expressed. Justify this statement with the help of a suitable example.

Answer 1

When a tall plant is crossed with a short plant, the first (F${}_1$) generation plants obtained is all tall. But when the F${}_1$ generation plants are crossed, the second (F${}_2$) generation plants obtained are not all tall: there are both tall and short plants.
This shows that the F${}_1$ plants inherits their trait from the short plants but do not express it in the presence of the tallness (dominant character), and transfer it to the next generation.