Cited by 165Hypothalamic control of reproductive hormonesReproductive Biology and FertilitySexual Differentiation and Disorders

Genetic Influences on the Timing of Puberty in Mice1

Nelson, James F., Karelus, Katarzyna, Felicio, Lêda S., Johnson, Thomas E.·1990·Biology of Reproduction

Abstract

Genetic influences on the timing of three pubertal events--vaginal opening, first vaginal cornification, and onset of cyclicity--were studied in C57BL/6J, DBA/2J, and C3H/HeJ mice and in two F1 hybrid strains (B6D2F1 and B6C3HF1). Marked genotypic differences were found. Among inbred strains, differences in the onset of vaginal opening and first vaginal cornification (C3H less than DBA less than C57) did not parallel those for the onset of cyclicity (C3H much greater than DBA = C57). Compared to parental strains, F1 hybrid strains were intermediate for times of vaginal opening and first vaginal cornification, consistent with the model in which the genetic effects on the timing of these events are additive. By contrast, onset of cyclicity occurred significantly earlier in the F1 hybrids than in their parent strains, indicating heterosis for one or more genes specifying this event. Body weights also differed among the genotypes from weaning onward, but these differences were only partially correlated with the differences in the timing of the pubertal events. Thus, genetic influences other than those affecting body weight contribute to the differential timing of pubertal events in these mouse strains. These results reveal marked genetic variation in the timing of puberty, and indicate that the set of genes specifying the timing of vaginal opening and first vaginal cornification differs from those specifying the onset of cyclicity.

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Crossref · 10.1095/biolreprod42.4.649

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Authors
Nelson, J. F., Karelus, K., Felicio, L. S., & Johnson, T. E.
Affiliations
  • McGill University (CA)
  • The University of Texas at San Antonio (US)
  • University of Colorado Boulder (US)
Corresponding author
Nelson, James F.
Venue
Biology of Reproduction
Published
1990-04-01
Volume
42
Issue
4
Pages
649-655
ISSN
  • 0006-3363 (ISSN-L)
  • 1529-7268
OpenAlex
W2026104991
Cited by
165
References
0
Citations by year
2026: 6 · 2025: 11 · 2024: 9 · 2023: 9 · 2022: 12 · 2021: 7 · 2020: 5 · 2019: 8 · 2018: 2 · 2017: 12 · 2016: 9 · 2015: 3 · 2014: 5 · 2013: 3 · 2012: 5
FWCI
0.90
Type
journal article
Language
en
Open access
closed
Locations
  • Biology of Reproduction (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Medical Research Council Canada
  • U.S. Public Health Service
  • Medical Research Council
  • National Institute on Aging (AG 08322, AG00369)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
Keywords
pubertal timing, vaginal opening, vaginal cornification, genetic variation, inbred mouse strains, F1 hybrids, heterosis, additive genetic effects, body weight, C57BL/6J mice, DBA/2J, C3H/HeJ
MeSH terms
Age Factors, Animals, Body Weight, Estrus, Female, Genotype, Mice, Inbred Strains, Sexual Maturation, Vagina, Mice

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