Dataset 1: Landmark data from second-generation laboratory-reared house mice.

Dataset 2: Landmark data from second-generation laboratory-reared house mice used for the monoandrous mating experiment. Specimen number (ID) can be matched with ID at the excel spreadsheet from Dataset 7.

Dataset 3: Landmark data from second-generation laboratory-reared house mice used to conduct a repeatability analysis. For the same individual, we have two sets of landmarks. Used to assess the repeatability of landmark placement. Specimen numbers/ID can be matched with ID at the Dataset 7

Dataset 4: Landmark data from third-generation laboratory-reared house mice. 

Dataset 5: Landmark data from third-generation laboratory-reared house mice used for the polyandrous mating experiment. Specimen number (ID) can be matched with ID at the excel spreadsheet from Dataset 8.

Dataset 6: Landmark data from third-generation laboratory-reared house mice used to conduct a repeatability analysis. For the same individual, we have two sets of landmarks. Used to assess the repeatability of landmark placement. Specimen numbers/ID can be matched with ID at the Dataset 8

Dataset 7: Excel spreadsheet containing morphological data and identifiers of each individual for the second-generation laboratory reared house mice and monoandrous mating experiment. Dataset contains three different sheets representing data used for three different analysis. Second-generation sheet: data used to check if 2nd generation house mice aligned with the expected baculum shape extremes; Monoandrous experiment data: data used to conduct the statistical analysis on the monoandrous mating experiments; Second-generation Repeatibility: data used for the analysis of reliability of landmark placement and repeatability of our measurements

Dataset 8: Excel spreadsheet containing morphological data and identifiers of each individual for the second-generation laboratory reared house mice and polyandrous mating experiment.Third-generation sheet: data used to check if 3rd generation house mice aligned with the expected baculum shape extremes; Polyandrous experiment data: data used to conduct the statistical analysis on the monoandrous mating experiments; Third-generation Repeatibility: data used for the analysis of reliability of landmark placement and repeatability of our measurements