在"英语"词典里parasexuality}的意思

在英语中PARASEXUALITY的发音

parasexuality  [pærəˌsɛkʃʊˈælətɪ]

PARASEXUALITY在英语中的意思是什么？

分期循环

Parasexual cycle

副作用循环是真菌和单细胞生物特有的过程，是一种不经过减数分裂或性结构发育转移遗传物质的非性别机制。 1956年，意大利遗传学家Guido Pontecorvo在构建构巢曲霉研究中首次描述。 通过菌丝融合开始分娩周期，其中细胞核和其他细胞质组分占据相同的细胞。 异源核细胞中不同核的融合导致二倍体核的形成，其被认为是不稳定的，并且可以通过涉及有丝分裂交叉和单倍体化的重组产生分离子。 有丝分裂交叉可导致染色体上的基因交换; 而单倍体可能涉及有丝分裂非连接，其随机重排染色体并导致非整倍体和单倍体细胞的产生。 像一个性循环一样，parasexuality使物种有机会重组基因组并在其后代产生新的基因型。 与性循环不同，该过程缺乏协调性，仅有丝分裂。 分娩周期类似有性繁殖。

The parasexual cycle, a process peculiar to fungi and single-celled organisms, is a nonsexual mechanism for transferring genetic material without meiosis or the development of sexual structures. It was first described by Italian geneticist Guido Pontecorvo in 1956 during studies on Aspergillus nidulans. A parasexual cycle is initiated by the fusion of hyphae during which nuclei and other cytoplasmic components occupy the same cell. Fusion of the unlike nuclei in the cell of the heterokaryon results in formation of a diploid nucleus, which is believed to be unstable and can produce segregants by recombination involving mitotic crossing-over and haploidization. Mitotic crossing-over can lead to the exchange of genes on chromosomes; while haploidization probably involves mitotic nondisjunctions which randomly reassort the chromosomes and result in the production of aneuploid and haploid cells. Like a sexual cycle, parasexuality gives the species the opportunity to recombine the genome and produce new genotypes in their offspring. Unlike a sexual cycle, the process lacks coordination and is exclusively mitotic. The parasexual cycle resembles sexual reproduction.

在英语 词典里parasexuality的定义

字典中的parasexuality的定义是parasexual行为。

PARASEXUALITY的翻译

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该章节所呈现的将parasexuality由 英语向其他语言的翻译是通过自动统计翻译获得的；在英语中基本的翻译单位是单词«parasexuality»。

• 翻译者英语 - 中文: parasexuality
• 翻译者英语 - 西班牙语: parasexualidad
• 英语: parasexuality
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与 «PARASEXUALITY»相关的英语书籍

在以下的参考文献中发现parasexuality的用法。与parasexuality相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。

Sexualities in History: A Reader

PARASEXUALITY. AND. GLAMOUR. The Victorian Barmaid as Cultural Prototype PETER BAILEY Sexuality, we are now told, plausibly enough, is everywhere.1 Yer recent scholarship, for all its advances, has done litrle to register or interprer ...

Kim M. Phillips, Barry Reay, 2002

A Textbook of Fungi

e.g. In Aspergillus- nidulans (n = 8) nuclei detected are with n = 1 7 (2n + 1 ), 1 5 ( 2n - 1 ), 16, 12, 11, 10, 9 and 8 so this leads to a strong support for haploidization. Parasexuality is a practical means for producing genetic variation, which is ...

Rajni Gupta, 2004

Parasexuality

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Frederic P. Miller, Agnes F. Vandome, McBrewster John, 2010

Microbial Technology

Even with the help of the low concentration of p-flurophenylamine benlate stimulate haplodization, so that fungus undergoes parasexual cycle. Parasexuality is being described in sexual fungi, it is not found in Neurospora crassa or Podospora ...

Rajni Gupta, K. G. Mukerji, 2001

An Introduction to Mycology

5. Products of meiosis readily recognized and 5. Recombinants cxc ur among vegetative isolated. tells. Recognized by use of suitable markers Although there are no examples of parasexuality in lower fungi, para- sexuality is still considered a ...

R. S. Mehrotra, K. R. Aneja, 1990

Text Book Of Botany Diversity Of Microbes And Cryptogams

Applications of Parasexuality The phenomenon of parasexuality is applied in several industrial processes. Most of the fungi which are significant in industries belong to the imperfect group of fungi and they reproduce by parasexual cycle.

Singh

FUNDAMENTALS OF PLANT PATHOLOGY

13.4.2 Parasexuality/Parasexual Cycle Several common mitosporic fungi, including Penicillium, Aspergillus, F usarium and T richoderma, appears to have abandoned sexual reproduction because their sexual stages are not seen in laboratory ...

N. G. RAVICHANDRA, 2013

Trichoderma And Gliocladium: Basic Biology, Taxonomy and ...

11.3 Variation in the nuclear genome resulting from asexual genetic recombination 11.3.1 Classical parasexuality For many years, fungi have been known to undergo somatic hybridization. This work originally was developed and analyzed ...

Gary E. Harman, C. P. Kubicek, 2002

Biology Of Conidial Fungi

species over the past 20 yr, and a list of their original references is given in Table I. This list includes only examples for which there is genetic evidence of parasexuality from laboratory studies modeled on the pioneering work with A. nidulans.

Garry T. Cole, 2012

Fungal Biology

Nonsexual. variation: parasexuality. Many common mitosporic fungi, such as Aspergillus, Penicillium, Fusarium, and Trichoderma, seem largely to have abandoned sexual reproduction, because their sexual stages are not seen in laboratory ...

J. W. Deacon, 2013