sexratio相关论文
Background: The long-term monitoring of demographic changes in waterbird populations remains limited, but such informati......
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The aim of this study was to evaluate the association between semen quality and the secondary sex ratio (SSR),defined as......
Sexual differences in reproductive and vegetative characteristics of a dioecious shrub,Helwingia jap
In dioecious plants,it is said that reproductive costs are different between males and females.Females invest proportion......
Sex expression and sex ratios in the dioecious epiphytic moss Dolichomitriopsis diversiformis(Mitt.)
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随着辅助生殖技术（assisted reproductive technology，ART）的发展，越来越多的不孕症夫妇拥有了自己的孩子。据不完全统计，截止到2010年，......
High temperature induced masculinization of zebrafish by down-regulation of sox9b and esr1 via DNA m
Elevated temperature could influence the sex differentiation by altering the expression of sex-related genes in fish. Ho......
In anuran amphibians,mating without amplexus is known for less than six species.Here we provide a new example of simulta......
【目的】为新疆北疆地区春尺蠖Apocheima cinerarius预测预报工作提供理论依据。【方法】本文在林间对春尺蠖的各虫态进行详细调查......
目的分析冻融胚胎卵裂球损伤对移植结局及子代的影响。方法回顾分析1 447例冻融胚胎移植(FET)周期,按移植胚胎卵裂球是否完整分为......
目的了解中国部分地区出生人口性别比状况及其影响因素。方法采用分层、随机整群抽样方法,在内蒙古、江苏、甘肃,贵州及黑龙江省5......
