Which of the following Mendelian principles is universally applicable?

1. According to Mendel's Law of Dominance, in some heterozygous animals, one feature is overridden by another trait since they share the same property. 
2. When two alleles contribute the same characteristic, the dominant allele will manifest first. 
3. Mendel's Law of Segregation, which came about as a result of his monohybrid cross, was established. 
4. According to this, allele pairs separate during gamete development and reconnect during fertilization.
5. In other words, as gametes are being produced, the genetic elements separate to only inherit one factor from the parents. 
6. Mendel's Law of Segregation, which is eventually established as true, is also known as the Law of Inheritance. 
7. The monohybrid cross of the pea plant results in the law of segregation, and the dihybrid cross results in the law of independent assortment.

Hence, option B is the correct answer.