Answer:
The correct answer would be A. Each parent only passes on one-half of its hereditary factors to the offspring.
It can be correctly explained with the help of the law of segregation. Â
It states that the alleles of each gene get segregated from each other and each gamete produced by a parent would contain only one out of two alleles of a gene.
For example, if the genotype of a parent is Tt, then the gamete would contain either T or t.
Thus, each parent only contributes half of its heredity factors in the form of gametes.