INTERSEXES AND SEX DETERMINATION IN CHICKENS
INTERSEXES AND SEX DETERMINATION IN CHICKENS
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DOI：
10.1126/science.172.3986.962
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发表时间：
1971-01-01
期刊：
影响因子：
56.9
通讯作者：
SHOFFNER, RN
中科院分区：
文献类型：
--
作者：
ABDELHAMEED, F;SHOFFNER, RN
在商业鸡群中，雌性鸡的双性个体出现的频率较低。两性间大体解剖检查显示性腺畸形。组织学检查证实这些性腺不是卵泡，而是由睾丸组织组成的。对15个双性个体的核型分析表明，其中13个为3A-ZZW三倍体（正常女性为2A-ZW），另外2个为雌雄嵌合体核型。红细胞体积准确反映倍性水平，建议用于筛选多倍体。双性三倍体可以孤雌繁殖，也可以在减数配子和未减数配子之间受精。
Chickens sexed as females in commercial flocks show a low frequency of intersex individuals. Gross anatomical examination of the intersexes revealed malformed gonads. Histological examination proved that these gonads were not ovotestes but were composed of testicular tissues. Karyotype analysis of 15 intersex individuals showed 13 of them to be 3A-ZZW triploids (normal females are 2A-ZW) while the other 2 were mosaic for male and female karyotypes. Red blood cell volume accurately reflects the ploidy level and is suggested for use in screening for polyploids. Intersex triploids may develop parthenogenetically or from fertilization between reduced and unreduced gametes.