When calculating the recurrence risk for a complex, possibly polygenic disorder with a couple who already have one child with the disorder, which additional factor has the greatest impact on increasing this risk

To compare two items, which is the correct order of body shifting?

The process of rocks breaking down and becoming other rocks

Drugs have a high potential for abuse. there is no routine therapeutic use for these drugs and they are not available for regular use. they may be obtained for “investigational use only” by applying to the u. s. drug enforcement agency. examples include heroin and lsd. which scheduled drug is this?