Mendel's early experiments challenged the central premise upon which previous ideas about inheritance had rested. This was the premise that
offspring can inherit only those traits that are displayed by their parents T/F

True.

Explanation:

Mendel is considered as the father of Genetics and explain the Laws of Inheritance. He explained the inheritance pattern by his experiments on the Pea plant Pisum sativum and uses the mathematics formula to explain the inheritance pattern.

Mendel explain that the genes are the factors that are responsible for the inheritance of the particular trait from the parents to their offspring. The Mendel's Laws were well accepted and breaks all the previous ideas about the inheritance pattern.

Thus, the answer is true.