gre考试阅读真题解析(A)_GRE阅读

　　 The variable environmental conditions that affect survival of adult snails

　　 The availability of potential mates for breeding

　　 The structural identity of offspring to parents of the same hand

　　 The frequency of unions between snails of different species

　　24. According to the passage, which of the following is true of Lymnaea peregra?

　　 Handedness within the species was at one time equally distributed between left and right.

　　 Under laboratory conditions, dextral eggs from Lymnaea peregra can be artificially induced to develop into sinistral snails.

　　 Broods of Lymnaea peregra are, without variation, exclusively sinistral or dextral.

　　 Handedness in Lymnaea peregra offspring is determined by only one of the parents.

　　 Geographic factors have played a larger role than has genetics in the evolution of the species.

　　25. The passage implies that in Lymnaea peregra, there will generally be

　　 more offspring of the nondominant hand in broods where handedness is determined after, rather than before, fertilization

　　 a sinistral gene that produces a protein in the cytoplasm of the egg cell

　　 fewer sinistral offspring in dextral broods than dextral offspring in sinistral broods

【gre考试阅读真题解析(A)】相关文章：

1 2 3 4 567 8 显示全文

上一篇：gre考试阅读真题解析(B) 下一篇：gre考试阅读真题解析(A)

GRE阅读 最新: GRE阅读陌生词汇的技巧
2016-03-01; GRE阅读题选项的原则
2016-03-01; 新GRE阅读经典句式盘点
2016-03-01; GRE阅读翻译练习
2016-03-01; GRE阅读主旨题解题技巧
2016-03-01; GRE阅读高分技巧
2016-03-01

网友关注: 2017届高考英语一轮复习考点真题演练：Section 12 阅读理解之科普知识类（含解析）; 2017届高考英语一轮复习考点真题演练：Section 14 完形填空之夹叙夹议文（含解析）; 2017届高考英语一轮复习考点真题演练：Section 14 完形填空之记叙文（含解析）; 2017届高考英语一轮复习全册课件：必修1 1.3《challenging yourself ⅲ being honest》（重大版）; 2017届高考英语一轮复习全册课件：必修4 4.2 unit2《stories on the wheel》（重大版）; 2017届高考英语一轮复习考点真题演练：Section 12 阅读理解之社会生活类（含解析）; 2017届高考英语一轮复习考点真题演练：Section 12 阅读理解之环境保护类（含解析）; 2017届高考英语一轮复习全册课件：必修4 4.6 unit6《poems and poets》（重大版）; 2017届高考英语一轮复习全册课件：必修4 4.1 unit1《places of interest》（重大版）; 2017届高考英语一轮复习考点真题演练：Section 12 阅读理解之时闻报道类（含解析）