Our children may be able (I hope, I fear) to choose their kids' traits: to select their gender and eye color;
(Our children; may be; able (I hope, I fear) to choose their kids' traits: to select their gender and eye color) (I; hope; ) (I; fear; ) (Our children; to choose; their kids' traits; to select their gender and eye color)
Our children I I Our children
may be hope fear to choose
able (I hope, I fear) to choose their kids' traits: to select their gender and eye color
their kids' traits to select their gender and eye color