Why is human height an exception to mendel's principles of heredity?

Answer;

Because, it is a heredity trait

Human height is an exception to Mendel's principles of heredity because it is a heredity trait.

Explanation;

Heredity traits are traits that are passed from one generation to the next.

These traits are controlled by genes that pass from parent to the child. Examples of these trait are; Tongue rolling, dimples, red and green color blindness, among others.

These traits are exception of the Mendel's principles of heredity.

Height can be affected by many factors, such as age, lifestyle, medical, etc. so two tall parents can have a short child