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Sterile heifer born twin to a bull (about 10% of the heifers born twin to a bull are normal. These are not freemartins).
a female born co-twin with a normal male
a female bovine with a masculinized brain that behaves as would a bull, at least insofar as it
a female bovine with a masculinized brain thatbehaves as would a bull, at least insofar as it will mount normal females
a heifer born twin to bull
Female born twin to a bull calf (approximately 9 out of 10 will not conceive).
A chromosomal female twin calf with ambiguous genitalia due to gonadal chimerism.
A condition in cattle where twins are born, one being male and the other female. This usually results in the female twin being infertile.
A freemartin is a female bovine with a masculinized behavior and non-functioning ovaries. Genetically, the cow is female, but it is sterilized in utero by hormones from a male twin.
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