Related Experiment Video
Updated: Jun 29, 2025

Effect of Male Accessory Gland Products on Egg Laying in Gastropod Molluscs
Published on: June 22, 2014
Sex Panic and the Productive Infertility of the Freemartin
Abstract:
Freemartinism is a biological phenomenon in genetically female cows born from a dizygotic twin pregnancy. Placental connections-blood and hormones between the freemartin and their male twin-generate an intersex cow unable to conceive. In this study, the freemartin emerges in a constant state of flux: between waste and use; becoming a technology and supplemented by other technologies; defined by human anxieties about gender; and a tool underscoring dominant gendered ideas about normative family life, human sex, and sexuality. It examines farmers and scientists' numerous attempts to harness the indeterminacy of the freemartin's liminal sex characteristics, and how dairy farmers transformed the freemartin into a heat detection technology, thus maximizing other cows' reproductive performance. Unabated scientific and agricultural engagement with freemartins has inspired new ways of thinking about the biological self and nonprocreative sexual pleasure on industrial farms.
Related Concept Videos
Infertility in Males
Spermatogenesis
The Ratio of X Chromosome to Autosomes
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
What is a Species?
The Y Chromosome Determines Maleness
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
Development of the Sexual Organs in the Embryo and Fetus
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...

