Razib Khan: Which Grandparent Is Your Child Most Related to? They Aren’t Equal. http://www.slate.com/articles/health_and_science/human_genome/2013/10/analyze_your_child_s_dna_which_grandparents_are_most_genetically_related.html … via @slate
@futurepundit and grandmas are more altruistic to the grandkids with whom they share the most genes: http://hbdchick.wordpress.com/2011/03/21/all-grandmas-are-not-created-equal/ …