Each parent contributes half of their genetic information to their offspring. This means that the offspring receives 50% of its DNA from the mother and 50% from the father.

Here's a breakdown:

* Humans have 23 pairs of chromosomes, totaling 46 chromosomes.

* Each parent contributes one chromosome from each pair, resulting in 23 chromosomes from the mother and 23 chromosomes from the father.

* These 23 chromosomes from each parent combine to form the offspring's unique set of 46 chromosomes.

Therefore, we can say that 50% of an offspring's genetic information comes from each parent.