The relative proportions of the sexes appearing in a total of 2,014 guinea pigs in the colony of the Department of Genetics, Iowa State College, over a six-year period have been studied. The ratio of males for the 2,014 animals was 49.4%. This is a close approach to the expected 50:50 relationship of the sexes as postulated by the sex-chromosome mechanism. Considerable seasonal fluctuation in the ratios were observed, but these are not consistent throughout the period. Age of parents, litter size, and litter sequence have no marked effect on the sex ratio.
Proceedings of the Iowa Academy of Science
©1929 Iowa Academy of Science, Inc.
Schott, R. G.
"The Sex Ratio in Guinea Pigs,"
Proceedings of the Iowa Academy of Science, 36(1), 383-383.
Available at: https://scholarworks.uni.edu/pias/vol36/iss1/121