freemartin$29967$ - significado y definición. Qué es freemartin$29967$
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Qué (quién) es freemartin$29967$ - definición

GENETIC CONDITION OF FEMALE MAMMALS
Freemartins; Free-martin; Freemartinism; Free marten; Martin heifer; Free-martin heifer; Freemartin heifer; Bovine hermaphrodite; Free martin; Free martins; Free-martins; Martin heifers
  • A plate showing a "Free Martin" from the collected works of John Hunter.

Free-martin         
·noun An imperfect female calf, twinborn with a male.
Freemartin         
A freemartin or free-martin (sometimes martin heifer) is an infertile female cattle with masculinized behavior and non-functioning ovaries. Phenotypically, the animal appears female, but various aspects of female reproductive development are altered due to acquisition of anti-Müllerian hormone from the male twin.
freemartin         
['fri:m?:t?n]
¦ noun a hermaphrodite or imperfect sterile female calf which is the twin of a male calf whose hormones affected its development.
Origin
C17: of unknown origin.

Wikipedia

Freemartin

A freemartin or free-martin (sometimes martin heifer) is an infertile female cattle with masculinized behavior and non-functioning ovaries. Phenotypically, the animal appears female, but various aspects of female reproductive development are altered due to acquisition of anti-Müllerian hormone from the male twin. Genetically, the animal is chimeric: karyotypy of a sample of cells shows XX/XY chromosomes. The animal originates as a female (XX), but acquires the male (XY) component in utero by exchange of some cellular material from a male twin, via vascular connections between placentas: an example of microchimerism. The chimerism is mainly present in the hematopoietic stem cells.