1. I read that each gene has a 50% chance to be transfered to a single gamete. Does the distance between two genes on the same chromosome influence the conditional probability for the second gene to be transfered to the same gamete as the first one? 2. Can the process of reproduction allow to change the distance between two specific genes inherited from the same parent? If both points were true and the conditional probability would decrease with distance (with a maximum close to 100% for close distance), then this would be an effective way to make groups of complementary genes with high probability of common passage to individual descendant, which would make the descendant more efficient.