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− | {{toplink
| + | #redirect[[Intersex#Abnormalities of chromosomal sex]] |
− | |backcolour =EED2EE
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− | |linkpage =Reproductive System - Anatomy & Physiology
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− | |linktext =Reproductive System
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− | |maplink = Reproductive System (Content Map) - Anatomy & Physiology
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− | |sublink1=Reproductive System - Anatomy & Physiology#Fertilisation.2C Implantation and Early Embryonic Development
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− | |subtext1=FERTILISATION , IMPLANTATION AND EARLY EMBRYONIC DEVELOPMENT
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− | |sublink2=Fertilisation, Implantation and Early Embryonic Development -Sexual Differentiation- Anatomy & Physiology
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− | |subtext2=SEXUAL DIFFERENTIATION
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− | }}
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− | <br>
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− | == Aetiology ==
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− | * Occurs in Mares
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− | * X0 sex chromosome complement
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− | * Normal autosomal chromosome complement
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− | * Develop an ovary
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− | * There is only one active X chromosome, so Oocytes die.
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− | * The death of Oocytes is followed by loss of follicles.
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− | * This leads to Ovarian Dysgensis (abnormal development) and a highly regressed Streaky Ovary that does not secrete the normal ovarian steroid hormones.
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− | * The Ovary therefore lacks tone and has no follicular cycles.
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− | == Morphology ==
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− | * Normal external genetalia
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− | * Small stature
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− | * Flaccid Uterus
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− | * Small, inactive Ovaries
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− | * Complete absence of Ovarian activity and consequent Anoestrous
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− | [[Category:Reproductive System]] | |