निम्नलिखित में से कौन सा निश्चित रूप से आनुवंशिकता/वंशानुक्रम द्वारा पूर्व-निर्धारित होता है?

Heredity is an important subject in psychology and biology. Which of the following is NOT a recognized law or principle of heredity?

Read the following statements: Assertion (A): Some children have traits that closely resemble their parents, while others are distinctly different from their parents. Reason (R): Determining how much a trait is due to heredity and how much is due to environment is a complex issue. Choose the correct option.