Correct option (c) holandric
Explanation :
Holandric genes describe a trait that is inherited only by the male line. Such traits are determined by genetic loci that occur only on the Y-chromosome and hence are present only in males. The genes involved in quantitative inheritance is called polygenic gene or polygenes. Quantitative inheritance is a type of inheritance controlled by one or more genes in which the dominant allele expressing a part or unit of the trait, the full trait being shown only when all tire dominant alleles are present. The gene having multiple phenotypic effects because of its ability to control the expression of a number of characters is called a pleiotropic gene.
