freemartin


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freemartin

(frē′mär′tn)
n.
A female animal, usually a calf, that is born as the twin of a male animal and is sterile because of having abnormal internal reproductive organs.

freemartin

a female twin born with a male, in which normal female sexual development has been adversely affected by hormones produced by the male twin.
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References in periodicals archive ?
Touching placentas will often form into one, ensuring a freemartin. If there are two distinct placentas, the female calf may well be fertile.
Feel around for an extra opening or protrusions; both indicate a freemartin.
Granted there's only an 8% chance that she's not a freemartin, but around here, the glass is always half-full of frothy whole milk, chilled to perfection--and there's always more where that came from.
Wright's freemartin." His publication also included a precise drawing of the gonads and reproductive tract of an animal with this anomaly.
Unfortunately, this concept runs into two problems: the low rate of multiple births and freemartins.
About 94 percent of female calves born twin to male calves are sterile and are called "freemartins." Outwardly female in appearance, the reproductive system is severely underdeveloped.
The first thought was that females with the Y chromosome could be "freemartins." This condition, resulting from twinning in cattle, causes infertility in the female calf born at the same time as her male twin.
Hence, they could not be freemartins, yet they inherited Y chromosome material from somewhere, most likely from their fathers."
The West Eugene club will mark the end of pre-Lenten hedonism with a party hosted by the Freemartins, Genus Pro and Papa's Soul Kitchen.
Hermaphrodites, freemartins, mosaics and chimeras in animals, Pp.