What are the patterns that do not follow the simple rules of Mendelian Inheritance?

Mendelian Inheritance:

1. After conducting multiple studies on garden pea plants, Gregor Johann Mendel presented the law of inheritance, sometimes known as Mendel's law of inheritance.
2. The law of dominance, the law of segregation, and the law of independent assortment are three of these laws.
3. The laws of Mendel's inheritance are:
4. The Law of Dominance: According to this law, the dominant trait of the parent is always seen in the progeny.
5. The Law of Segregation: This law states that the different alleles of the same chromosomes are separated during the meiosis.
6. The Law of Independent Assortment: The alleles that are separated during the meiosis have no effect on how the two alleles are segregated.
7. Apart from his laws, Mendel's inheritance law has a few exceptions:

1. Incomplete dominance: Incomplete dominance occurs when neither of a gene's two alleles is dominant over the other. Both alleles are present at the same time, resulting in a novel phenotype. The new phenotype is a cross between the old and the new one.
2. Co-dominance: Co-dominance is a situation in which both alleles in a heterozygote manifest themselves at the same time.
3. Polygenic inheritance: When more than one gene controls one character, it is known as polygenic inheritance.
4. Multiple alleles: Multiple alleles are defined as three or more alleles for the same gene or region.
5. Pleiotropy: Pleiotropy occurs when one gene has an effect on two or more phenotypic features.