Final answer:
Imprinting is a form of non-Mendelian genetic inheritance where both alleles are expressed completely, without one allele masking the other. This is different from other forms of genetic inheritance where only one allele is expressed or one allele masks the expression of the other.
Step-by-step explanation:
Imprinting is a form of non-Mendelian genetic inheritance, which means it does not follow Gregor Mendel's rules. In imprinting, both alleles of a gene are expressed completely, and one does not mask the other. This is different from other forms of genetic inheritance, where only one allele is expressed or one allele masks the expression of the other.
For example, in Mendelian inheritance, if a person has one dominant allele and one recessive allele for a trait, only the dominant allele will be expressed and the recessive allele will be masked. However, in imprinting, both alleles are expressed completely, regardless of their dominance or recessiveness.