primary sex ratio [遗] 初级性比 ; 原始性比率
Birth sex ratio 出生性别比 ; 出生性别比例
secondary sex ratio [遗] 次级性比 ; 第二性比
sex ratio at birth 出生婴儿性别比 ; 出生性别比
sex-ratio 性比
low sex ratio 性别比偏低
bee sex ratio 蜜蜂性比值
high sex ratio 性别比偏高
Child sex ratio 儿童性别比
According to the censuses of our country in recent three decades, the sex ratio at birth increased gradually, and in some areas, was in serious imbalance.
我国近年来人口普查资料表明,出生性别比有逐年升高趋势,某些地区已呈现明显失衡状态。
参考来源 - 出生人口性别比失衡原因研究In this paper we discussed the reasons for the change in sex ratio from 3 female : 1 male to 5 female : 1 male from the triploid female silkworm which is generated from a tetraploid female silkworm.
解释了过冷却处理诱发的四倍体后代三倍体蚕发生性比从3:1向5:1变化的现象。
参考来源 - 家蚕多倍体细胞遗传学研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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