Amphimixis
Sexual reproduction is a process that creates a new organism by combining the genetic material of two organisms. It occurs both in eukaryotes and prokaryotes: in multicellular eukaryote organisms, an individual is created anew; in prokaryotes, the initial cell has additional or transformed genetic material. In a process called genetic recombination, genetic material (DNA) originating from two different individuals (parents) join up so that homologous sequences are aligned with each other, and this is followed by exchange of genetic information. After the new recombinant chromosome is formed, it is passed on to progeny.
Sexual reproduction is the primary method of reproduction for the vast majority of macroscopic organisms, including almost all animals and plants. The evolution of sexual reproduction is a major puzzle. The first fossilized evidence of sexual reproduction in eukaryotes is from the Stenian period, about 1 to 1.2 billion years ago. There are two main processes during sexual reproduction in eukaryotes: meiosis, involving the halving of the number of chromosomes; and fertilization, involving the fusion of two gametes and the restoration of the original number of chromosomes. During meiosis, the chromosomes of each pair usually exchange genetic information to achieve homologous recombination. Evolutionary thought proposes several explanations for why sexual reproduction developed and why it is maintained. These reasons include fighting the accumulation of deleterious mutations, increasing rate of adaptation to changing environments (see the red queen hypothesis), dealing with competition (see the tangled bank hypothesis) or as an adaptation for repairing DNA damage and masking deleterious mutations. The maintenance of sexual reproduction has been explained by theories that work at several different levels of selection, though some of these models remain controversial. New models presented in recent years, however, suggest a basic advantage for sexual reproduction in slowly reproducing, complex organisms, exhibiting characteristics that depend on the specific environment that the given species inhabit, and the particular survival strategies that they employ.

This is an excerpt from the article Amphimixis from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Amphimixis at en.wikipedia.org was accessed 65 times in the last 30 days. (as of: 04/14/2014)
Images on Amphimixis
Preview image:
Original:
Search results from Google and Bing
1
>30
1
amphimixis - definition of amphimixis by the Free Online Dictionary ...
Also found in: Medical, Encyclopedia, Wikipedia, 0.03 sec. am·phi·mix·is ( m f -m k s s). n. pl. am·phi·mix·es (-m k s z ). The union of the sperm and egg in sexual ...
www.thefreedictionary.com/amphimixis
2
>30
2
Amphimixis - Merriam-Webster Online
Definition of Amphimixis from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.
www.merriam-webster.com/dictionary/amphimixis
3
>30
3
Amphimixis - Medical Definition and More from Merriam-Webster
the union of gametes in sexual reproduction. 2. : the combining of pregenital, anal, and urethral eroticism in the development of genital sexuality ...
www.merriam-webster.com/medical/amphimixis
4
>30
4
Amphimixis | Define Amphimixis at Dictionary.com
Biology. the merging of the nuclei of the sperm and egg cells; sexual reproduction. 2. Psychoanalysis. the combining of anal and genital eroticism in the ...
dictionary.reference.com/browse/amphimixis
5
>30
5
amphimixis (Meaning of) - Encyclo
Amphimixis. Sexual reproduction resulting in an individual having two parents. Invariably the case in most animals, with the exception of a few hermaphrodite ...
www.encyclo.co.uk/define/amphimixis
6
>30
6
amphimixis - Oxford Dictionaries
Definition of Amphimixis in American English in Oxford dictionary (US). Meaning, pronunciation and example sentences. English to English reference content.
oxforddictionaries.com/us/definition/american_english/amphimixis
7
>30
7
What does amphimixis mean? definition and meaning (Free English ...
What does Amphimixis mean? Proper usage of the word Amphimixis. Information about Amphimixis in the AudioEnglish.org dictionary, synonyms and antonyms.
www.audioenglish.org/dictionary/amphimixis.htm
8
>30
8
What Is the Definition of Amphimixis - Ask.com
The term Amphimixis is a noun which refers to sexual reproduction that involves the fusion of two different gametes leading to the formation of a zygote.
www.ask.com/question/what-is-the-definition-of-amphimixis
9
>30
9
amphimixis - WordReference.com Dictionary of English
Amphimixis /ˌæmfɪˈmɪksɪs/ n true sexual reproduction by the fusion of gametes from two organisms. Etymology: 19th Century: from amphi- + Greek mixis a ...
www.wordreference.com/definition/amphimixis
10
>30
10
Amphimixis - Scrabble Word Finder
Amphimixis definition, definition of Amphimixis, Anagrams of Amphimixis, words that start with Amphimixis, and words that can be created from Amphimixis.
www.scrabblefinder.com/word/amphimixis/
Search results for "Amphimixis"
Google: approx. 38.900
Amphimixis in science
Classification of hypotheses on the advantage of amphimixis.
Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853. A classification of hypotheses on the advantage of Amphimixis over apomixis is ...
[PDF]Evolution of amphimixis and recombination under fluctuating ...
Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853, USA ... Amphimixis can have a short-term advantage over apomixis if selection.
Amphimixis and pseudogamy in fresh-water triclads: Experimental ...
Amphimixis and pseudogamy in fresh-water triclads: Experimental reconstitution of .... 1. Institute of Zoology and Comparative Anatomy of Pisa University, Italy ...
amphimixis - Oxford Dictionaries
Definition of Amphimixis in American English in Oxford dictionary (US). Meaning, pronunciation and example sentences. English to English reference content.
[PDF]Classification of Hypotheses on the Advantage of Amphimixis
vantage of Amphimixis to the reciprocal gene exchange that alters genetic variability and response to ... Hall, Cornell University, Ithaca, NY 14853. This paper.
Dictionary - Definition of amphimixis
Dictionary - Definition of Amphimixis. ... Definition: Amphimixis ... [Wordnet]. Source: WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.
Amphimixis, oder, Die Vermischung der... - HathiTrust
Catalog Record: Amphimixis, oder, Die Vermischung der Individuen | Hathi ... Full view (original from Indiana University); Full view (original from University of ...
amphimixis – Dictionary definition of amphimixis | Encyclopedia.com ...
Definition of Amphimixis – Our online dictionary has Amphimixis information from ... A Dictionary of Biology 2004, originally published by Oxford University Press ...
Classification of hypotheses on the advantage of amphimixis ...
Classification of hypotheses on the advantage of Amphimixis. A S Kondrashov. Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853.
amphimixis - Urdu to English Dictionary
2 result(s) found for the word 'Amphimixis' : ... Your comments/feedback/ correction/thoughts for word Amphimixis ... Amjad Qureshi · Coventry University.
Books on the term Amphimixis
Plant Nematology
Plant Nematology
Roland N. Perry, Maurice Moens, 2006
R. reniformis 9 (18) Amphimixis Globodera mexicana 9 Amphimixis G. pallida 9 ( 18) Amphimixis G. rostochiensis 9—11 (18—24) Amphimixis G. solanacearum 9 Amphimixis G. tabacum 9 Amphimixis G. virginiae 9 Amphimixis Heterodera ...
The Evolution of Haploid-diploid Life Cycles: 1993 Symposium on ...
The Evolution of Haploid-diploid Life Cycles: 1993 Symposium on ...
Mark Kirkpatrick, 1994
Table 1 presents the results on when the three forms of Amphimixis invade the apomictic population or eliminate apomixis ... We can see that the spread of Amphimixis does not require crossing-over and that all three forms of Amphimixis have ...
The Evolution Theory
The Evolution Theory
August Weismann, John Arthur Thomson, Margaret R. Thomson, 1904
LECTURE XXIX THE GENERAL SIGNIFICANCE OF Amphimixis (continual) Association of Amphimixis* with reproduction — Origin of Amphimixis— Its lowest forms— Amphimixis in Coccidia — Chromosomes in unicellular organisms— ...
Heredity and selection in sociology
Heredity and selection in sociology
Georges Chatterton-Hill, 1907
of generations ; since the species themselves would have to disappear before Amphimixis could disappear. Thus the objection that, as Amphimixis does not directly benefit the individuals of the species which exhibit it, therefore natural ...
Development of Google searches


Blog posts on the term
Amphimixis
การทำให้ผสมพันธ์ุกัน amphimixis; แพร่ของสารพันธุกรรมสองคน ‘ | Liberty Bill
» การทำให้ผสมพันธ์ุกัน Amphimixis; แพร่ของสารพันธุกรรมสองคน ‘ |
libertybill.org/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%97%E0%B8%B3%E0%B9%83%E0%B8%AB%E0%B9%89%E0%B8%9C%E0%B8%AA%E0%B8%A1%E0%B8%9E%E0%B8%B1%E0%B8%99%E0%B8%98%E0%B9%8C%E0%B8%B8%E0%B8%81%E0%B8%B1%E0%B8%99-amphimixis/
chikuru: ouabain, amphimixis, deodar, eristic, lixiviate, brachycephalic, saxicolous,...
chikuru.livejournal.com/30863.html
amphimixis [lang=tr,en]
Amphimixis : sözlük : dictionary : lang=tr,en
www.seslisozluk.net/nedir/amphimixis
UGG激安販売サイト、花のような【SAKURA?UGG店舗】。: amphimixisの意味
━━ n. (pl.
mouthaidy.blogspot.com/2013/04/amphimixis.html
Ecology & Evolution Footnotes: Weismann on sexual reproduction
[Update] For an excellent exception and good review of the historical development of the evolutionary significance of sex see:Meirmans S (2009) The evolution of the problem of sex. In: Schön I, Martens K, van Dijk P (eds) Lost sex.
historiesofecology.blogspot.com/2012/08/weismann-on-sexual-reproduction.html
Complementation, genetic conflict, and the evolution of sex and recombination
jhered.oxfordjournals.org/content/early/2010/03/03/jhered.esq009
Biology Notes
julianodea.blogspot.com/2011/11/selfish-chromosome-why-sex-evolved-by.html
Amphimixis: 和風下着
Amphimixis,hnd4jt
eip5uxvbu9xp3.seesaa.net/article/345022026.html
12