An Adult Triploid Chicken (Gallus domesticus) with a Left Ovotestis

Autor:	L.C. Christian, G.A. Witt, Susumu Ohno, C. Stenius, W.A. Kittrell
Rok vydání:	1963
Předmět:	endocrine system medicine.medical_specialty Gonad Ovotestis urogenital system Somatic cell Biology Sperm medicine.anatomical_structure Prophase Endocrinology Meiosis Internal medicine Cortex (anatomy) Genetics medicine Molecular Biology Genetics (clinical) Medulla
Zdroj:	Cytogenetic and Genome Research. 2:42-49
ISSN:	1424-859X 1424-8581
DOI:	10.1159/000129764
Popis:	Cytological studies of a fully-grown Rhode Island Red chicken (Gallus domesticus) with ambiguous sexual characteristics revealed a triploid chromosome constitution with two Zs (3A-ZZ). While this bird had the left oviduct and right rudimentary gonad of a normal hen, the left gonad was like an ovotestis with a sharply defined cortex and medulla. In the cortex were embryonic ovigerous cords containing oöcytes in first meiotic prophase; those oöcytes which had reached dictyotene and formed primordial follicles were degenerative. In the medulla were well-developed seminiferous tubules, a few of which contained sperm heads, although in most spermatocytes, meiosis had not proceeded very far. No diploid cells were found in squash preparations of spleen, bone marrow, or gonad; both somatic cells and germ cells were triploid.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7e9b648485a78ecbca3011b80dd5c30 https://doi.org/10.1159/000129764 Zobrazit plný text záznamu