# Selected Reproduction **Domain:** Genetics / Reproductive Technology / Population Biology **Doc Type:** Concept Node **Classification:** Historical and Technical Concept **Maturity:** Developed **Related:** [[wiki/Genotype|Genotype]], [[wiki/Eugenics|Eugenics]], [[wiki/Genotype–Environment Reconstruction|Genotype–Environment Reconstruction]], [[wiki/In Vitro Fertilization|In Vitro Fertilization]], [[wiki/Embryo Selection|Embryo Selection]] ## Definition **Selected Reproduction describes reproductive practices in which potential genetic contributors, embryos or reproductive pairings are chosen partly because of traits or characteristics believed to have heritable value.** The term is useful because it identifies the mechanism without collapsing several historically distinct operations into one word. Selected reproduction can include historically: - selective mating; - donor selection; - sperm or egg donor screening; - embryo selection; - proposed germ-plasm selection programs. It is not equivalent to cloning, genome editing, sterilization policy or developmental engineering. ## Positive Eugenics Historically, **positive eugenics** referred to efforts intended to increase reproduction among people believed to carry desirable heritable characteristics. The historical category is important and should remain linked through [[wiki/Eugenics|Eugenics]]. The technical mechanism, however, can be described more precisely as selection over reproductive inputs. ## Repository for Germinal Choice Robert Klark Graham founded the Repository for Germinal Choice in 1979. A U.S. Office of Technology Assessment report described it as a sperm bank specializing in donors selected largely for reported accomplishments, particularly in the hard sciences, and recorded 35 births through the end of 1986. The popular label “Nobel sperm bank” was misleading; the OTA noted that its inventory did not in fact consist of Nobel laureate samples. This remains one of the clearest modern cases of deliberately selecting reproductive donors for perceived high achievement. ## Hermann J. Muller Nobel geneticist Hermann J. Muller advocated forms of voluntary germ-plasm selection and discussed the possibility that artificial insemination could widen reproductive choice. His work belongs to the historical lineage of positive eugenics and demonstrates that selected reproduction was not confined to fringe discourse. ## Scientific Limits Complex traits such as general intelligence, creativity, persistence, social cognition and risk tolerance are: - polygenic; - pleiotropic; - developmentally contingent; - environmentally responsive; - difficult to define as unitary targets. Selecting a high-achievement donor therefore cannot be assumed to reproduce the donor’s phenotype. A population-level shift in probabilities is conceptually different from reproducing a specific individual. ## Pantheon [[wiki/Pantheon S1E5 — Zero Daze|Zero Daze]] goes beyond selected reproduction. Caspian is not merely selected from a high-achievement lineage. The fictional program attempts: **source-specific genomic recurrence + matched developmental environment + formative-event replay** That is why [[wiki/Genotype–Environment Reconstruction|Genotype–Environment Reconstruction]] is the more exact node for Holstrom’s Plan B. ## Howard Hughes Thought Experiment A hypothetical program that distributed descendants of an exceptional individual across many households would resemble a combination of: **selected reproduction** **behavioral-genetic cohort design** **longitudinal developmental study** If the households systematically varied developmental conditions, the result would be more scientifically informative about genotype–environment interaction than a single source-matched child. That observation is an analysis of experimental logic, not evidence that such a human program has occurred. ## Key Insight **Selection changes probabilities; it does not copy a person.** Pantheon becomes interesting precisely because Holstrom’s program assumes selection is insufficient and therefore attempts to control development as well. ## Sources - U.S. Office of Technology Assessment, _Artificial Insemination: Practice in the United States_: https://ota.fas.org/reports/8804.pdf