Heritability of social behavioral phenotypes and preliminary associations with autism spectrum disorder risk genes in rhesus macaques: A whole exome sequencing study.
Young monkeys inherit their social style and carry human autism-linked genes, giving us a new lab model for why social skills run in families.
01Research in Context
What this study did
Gunter et al. (2022) watched groups of young rhesus macaques on an island. They coded how much each monkey played, groomed, or sat alone.
The team took blood from the monkeys and read every letter of their DNA. They looked for human autism-risk genes in the monkey code.
What they found
Social style ran in families. If mom was social, her kids were too. The numbers showed the trait is partly inherited.
Some of the same genes tied to human autism also popped up in the most solitary monkeys. The match is early but points to a new animal model.
How this fits with other research
Gibson et al. (2005) built a rat model for autism-like focus on one cue. Chris adds a monkey model for social heredity. Both give lab tools to study autism without human DNA limits.
Ghaziuddin (2000) found more autism traits in human relatives of Down-plus-autism cases. Chris shows the same heritability pattern in monkeys, backing the idea that genes drive social style across species.
Yorke et al. (2025) report that sensory genes link to autism only when alexithymia is present. Chris ignores alexithymia and still finds social genes, so the two studies may be looking at different genetic paths.
Why it matters
You now have a monkey family tree that mirrors what you see in human clinics. When a client’s parents say “he’s just like Dad,” you can point to real data showing social skills are partly genetic. Use this fact to shift parent guilt and to argue for early social training: if genes load the gun, environment can still aim it.
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02At a glance
03Original abstract
Nonhuman primates and especially rhesus macaques (Macaca mulatta) have been indispensable animal models for studies of various aspects of neurobiology, developmental psychology, and other aspects of neuroscience. While remarkable progress has been made in our understanding of influences on atypical human social behavior, such as that observed in autism spectrum disorders (ASD), many significant questions remain. Improved understanding of the relationships among variation in specific genes and variation in expressed social behavior in a nonhuman primate would benefit efforts to investigate risk factors, developmental mechanisms, and potential therapies for behavioral disorders including ASD. To study genetic influences on key aspects of social behavior and interactions-individual competence and/or motivation for specific aspects of social behavior-we quantified individual variation in social interactions among juvenile rhesus macaques using both a standard macaque ethogram and a macaque-relevant modification of the human Social Responsiveness Scale. Our analyses demonstrate that various aspects of juvenile social behavior exhibit significant genetic heritability, with estimated quantitative genetic effects similar to that described for ASD in human children. We also performed exome sequencing and analyzed variants in 143 genes previously suggested to influence risk for human ASD. We find preliminary evidence for genetic association between specific variants and both individual behaviors and multi-behavioral factor scores. To our knowledge, this is the first demonstration that spontaneous social behaviors performed by free-ranging juvenile rhesus macaques display significant genetic heritability and then to use exome sequencing data to examine potential macaque genetic associations in genes associated with human ASD.
Autism research : official journal of the International Society for Autism Research, 2022 · doi:10.1126/science.aat8077