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单词 heterosis
释义

heterosis /ˌhetə'rəʊsɪs//ˌhɛtə'rɑsɪs/

英汉-汉英词典
n. 杂种优势,混种盛势
词组 | 习惯用语
您要查找的是不是:
  • heterozygous adj. 杂合的
  • heterosexual n. 异性恋者 adj. 异性恋的
  • sclerosis n. 硬化(症)
  • prosthesis n. 弥补;假体;添字首音
  • osteoporosis n. 骨质疏松症
heterosis n. [遗] 杂种优势
negative heterosis 负优势
positive heterosis 正优势
heterosis index 杂种优势指数
heterosis breeding 杂种优势育种
standard heterosis 标准优势
two gene heterosis 二基因杂种优势
breeding for heterosis 杂种优势育种

网络短语:
over-standard heterosis 超标优势
transgressive heterosis 超亲优势
homogametic heterosis 同源配子杂种优势
single-gene heterosis 单一基因杂种优势
heterosis prediction 杂种优势预测
Photosynthetic heterosis 光合优势
individul heterosis 体杂种优势
subspecific heterosis 亚种间杂种优势
relative heterosis 相对优势
英语例句库
  1. As a general, boll number usually has high midparent or competitive heterosis, the boll weight has middle heterosis, but there is have no midparent heterosis in lint percentage.
    一般而言,单株铃数具有较高的杂种优势,铃重具有中等的杂种优势,衣分率则偏向双亲一方或居于中间,没有杂种优势。
  2. The heterosis use model mainly is the Kafir×kaoliang, the kaoliang×kaoliang, trend Kafir×trend kaoliang, the Shallu×trend kaoliang.
    杂种优势利用模式主要是南非高粱×中国高粱,中国高粱×中国高粱,倾南非高粱×倾中国高粱,印度高粱×倾中国高粱。

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中文百科

杂种优势

杂种优势Heterosis)是一个用在遗传学和育种之上的术语。杂种优势是指杂交种通过继承其父母的不同的优势,可能获得一个更好的生物特性(但是也可能杂交后只继承了父母各自的缺点导致变得更差)。

杂种优势一般和近交衰退相对比。

相对的也有远交衰退,如杂种衰败,杂种由于生殖隔离等原因不能产生后代。

英语百科

Heterosis 杂种优势

A mixed-breed dog
 Genetic basis of heterosis.

Dominance hypothesis. Scenario A.
Fewer genes are under-expressed in the homozygous individual. Gene expression in the offspring is equal to the expression of the fittest parent.

Overdominance hypothesis. Scenario B.
Over-expression of certain genes in the heterozygous offspring.

(The size of the circle depicts the expression level of gene A)

Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring. The adjective derived from heterosis is heterotic.

An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents. These effects can be due to Mendelian or non-Mendelian inheritance.

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更新时间:2025/6/21 21:37:19