Answer:
A gene transmitted to males from the maternal line and from fathers to daughters.
Explanation:
Gregor Mendel through his research on pea plants, came up with three laws which are:
In His work, he established the basic patterns of inheritance and it wasn't until after his death that sex linked inheritance patterns were identified.
He believed that a pair of genes called alleles, were transmitted, each allele from one parent and both alleles transmitted from each parent constituted the complete pair in the offspring.
However, if different variants of the same gene were inherited from both parents, the dominant gene is expressed in the offspring (phenotype).
Since the basis of his work established genes being equally transmitted by both parents to offspring, the variations being due to dominance, genes transmitted from mother to son and from father to daughter, follows the Mendelian pattern of inheritance.