Q. Which Mendel Law of inheritance is universally acceptable and without any exception ?

Hello Student

Mendel’s Monohybrid Cross is the law which universaly accepted without any exception.
it gives a phenotypic ratio of 3:1.

Mental,s law of segregation is the law law which is universally accepted without any exception so it is the best answer of the question

Mendel`s 2nd law I.e, Law of Segregation is universally accepted it is also known As Law of purity of gametes.