Spreading Genes in Tight Spaces

Caution: This Science Fiction Sex Story contains strong sexual content, including Ma/Fa, mt/ft, Ma/ft, mt/Fa, Consensual, Romantic, NonConsensual, Rape, Heterosexual, Science Fiction, Space, Incest, Father, Daughter, Group Sex, First, Petting, Pregnancy,

Science Fiction Sex Story: A spaceship is going to colonize a new planet. Towards the end of the trip, a major goal is increasing the colonist population rapidly. To conserve resources, people spend most of their time asleep, often awakening just long enough to procreate. Then Jason is found to have a gene which makes him the preferred father for every new baby. 'How do I fuck thee? Let me count the ways.' Emotional positions, not physical.