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Congenital retroflexion of the penis and inguinal cryptorchidism in a presumptive bovine twin with a 60,XY/60,XX/61,XX,+cen chromosome constitution.
Can J Comp Med. 1976 Oct; 40(4):429-33.CJ

Abstract

Studies were carried out on a yearling Holstein with external genitalia resembling those of a freemartin whose birth and developmental history was unknown. Dissection following slaughter showed testes close to the external inguinal rings, an underdeveloped penis coiled up subcutaneously in the perineum and terminating in a deep fossa at the level of the ischial arch and no evidence of a female genital tract. Chromosome analyses showed 60,XY cells in the blood and 60,XX and 61,XX,+cen cells in other tissues. It is postulated that the animal had a basic 60,XX/61,XX+cen mixoploid chromosome constitution, that the centric fragment functioned as a Y chromosome or as an autosomal modifier of the X chromosome in sex determination which accounted for the animal's Klinefelter syndrome-like abnormalities, and that animal was also twin to a bull which accounted for the presence of 60,XY cells in the blood.

Authors

No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11884

Citation

Hare, W C.. "Congenital Retroflexion of the Penis and Inguinal Cryptorchidism in a Presumptive Bovine Twin With a 60,XY/60,XX/61,XX,+cen Chromosome Constitution." Canadian Journal of Comparative Medicine : Revue Canadienne De Medecine Comparee, vol. 40, no. 4, 1976, pp. 429-33.
Hare WC. Congenital retroflexion of the penis and inguinal cryptorchidism in a presumptive bovine twin with a 60,XY/60,XX/61,XX,+cen chromosome constitution. Can J Comp Med. 1976;40(4):429-33.
Hare, W. C. (1976). Congenital retroflexion of the penis and inguinal cryptorchidism in a presumptive bovine twin with a 60,XY/60,XX/61,XX,+cen chromosome constitution. Canadian Journal of Comparative Medicine : Revue Canadienne De Medecine Comparee, 40(4), 429-33.
Hare WC. Congenital Retroflexion of the Penis and Inguinal Cryptorchidism in a Presumptive Bovine Twin With a 60,XY/60,XX/61,XX,+cen Chromosome Constitution. Can J Comp Med. 1976;40(4):429-33. PubMed PMID: 11884.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Congenital retroflexion of the penis and inguinal cryptorchidism in a presumptive bovine twin with a 60,XY/60,XX/61,XX,+cen chromosome constitution. A1 - Hare,W C, PY - 1976/10/1/pubmed PY - 1976/10/1/medline PY - 1976/10/1/entrez SP - 429 EP - 33 JF - Canadian journal of comparative medicine : Revue canadienne de medecine comparee JO - Can. J. Comp. Med. VL - 40 IS - 4 N2 - Studies were carried out on a yearling Holstein with external genitalia resembling those of a freemartin whose birth and developmental history was unknown. Dissection following slaughter showed testes close to the external inguinal rings, an underdeveloped penis coiled up subcutaneously in the perineum and terminating in a deep fossa at the level of the ischial arch and no evidence of a female genital tract. Chromosome analyses showed 60,XY cells in the blood and 60,XX and 61,XX,+cen cells in other tissues. It is postulated that the animal had a basic 60,XX/61,XX+cen mixoploid chromosome constitution, that the centric fragment functioned as a Y chromosome or as an autosomal modifier of the X chromosome in sex determination which accounted for the animal's Klinefelter syndrome-like abnormalities, and that animal was also twin to a bull which accounted for the presence of 60,XY cells in the blood. SN - 0008-4050 UR - https://www.unboundmedicine.com/medline/citation/11884/Congenital_retroflexion_of_the_penis_and_inguinal_cryptorchidism_in_a_presumptive_bovine_twin_with_a_60XY/60XX/61XX+cen_chromosome_constitution_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/11884/ DB - PRIME DP - Unbound Medicine ER -