▁effects ▁of ▁increased ▁mat ernal ▁or ▁parent al ▁invest ment ▁in ▁car ing ▁for ▁dis adv ant aged ▁off spring , ▁seeking ▁to ▁compens ate ▁for ▁gen etic ▁dis adv antage . ▁It ▁is ▁a ▁theory ▁that ▁suggests ▁that ▁behavior al ▁as ▁well ▁as ▁phys i ological ▁factors ▁may ▁play ▁a ▁role ▁in ▁the ▁level ▁of ▁re cess ive ▁gen etic ▁dis orders ▁in ▁a ▁population . ▁ ▁According ▁to ▁Andrew ▁Over all ▁of ▁the ▁University ▁of ▁Edinburgh , ▁“ Re product ive ▁compens ation ▁may ▁be ▁particularly ▁significant ▁where ▁economic ▁or ▁social ▁factors ▁mean ▁that ▁families ▁are ▁small ▁compared ▁to ▁the ▁maximum ▁re product ive ▁rate . ▁Within ▁small ▁families , ▁dise ased ▁inf ants ▁may ▁be ▁more ▁likely ▁to ▁be ▁replaced . ▁As ▁a ▁consequence , ▁parents ▁with ▁otherwise ▁reduced ▁fert ility ▁have ▁a ▁greater ▁influence ▁on ▁the ▁frequency ▁of ▁re cess ive ▁alle les ▁in ▁future ▁gener ations .” ▁▁ ▁Ian ▁H ast ings ▁has ▁argued ▁that ▁re product ive ▁techn ologies ▁such ▁as ▁emb ry o ▁sex ▁selection , ▁pre impl ant ation ▁gen etic ▁diagn osis ▁with ▁in ▁vit ro ▁fert il ization , ▁and ▁select ive ▁term ination ▁of ▁pre gn ancy ▁may ▁increase ▁the ▁frequency ▁of ▁gen etic ▁dis orders ▁through ▁re product ive ▁compens ation . ▁ ▁More ▁recently ▁the ▁re product ive ▁compens ation ▁hypothesis ▁has ▁been ▁generalized ▁to ▁include , ▁not ▁only ▁re cess ive ▁gen etic ▁dis orders , ▁but ▁in ▁a ▁more ▁general ▁sense , ▁the ▁effects ▁of ▁parent al ▁compens