Abstract
A dialled cross analysis was aimed at obtaining information regarding genetic influences on the copulatory behavior of rats, and permitting considerations of adaptive significance. Rats of 4 inbred strains, ACI, F344, LEW, and WF, and all possible F1 crosses were used. Of 385 males tested, 73 failed to mate. The F1 rats were more likely to mate than were rats with inbred genotypes. Overdominance was generally apparent for low frequencies of mounts and intromissions preceding ejaculation across 5 series and 3 tests. A trend for directional dominance toward low scores on various latency measures of copulatory behavior also was apparent. According to the theory relating directional dominance to adaptation, it would appear generally adaptive for rats to copulate rapidly and to ejaculate after relatively few mounts and intromissions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of comparative and physiological psychology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.