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Asexual generation

Asexual generation

reproduction by fission, gemmation, or in any other way without union of the male and female cell, or conjugation.

See: parthenogenesis.

Synonym: heterogenesis, nonsexual generation.


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Re: Experimental evidence for evolution

... selection can do it's thing. 2. Most of the gain is in the first 2000 generations Not according to Lensky et al; "Although adaptation decelerated ... between species (67) Although the bacteria in the LTEE are strictly asexual, we can nonetheless imagine testing this criterion by producing ...

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by Geokinkladze
Sat Sep 11, 2010 2:39 am
 
Forum: Evolution
Topic: Experimental evidence for evolution
Replies: 103
Views: 180289

Re: Experimental evidence for evolution

... chosen for this experiment to provide selection pressure. After 31500 generations the long delayed evolution of Cit+ arrived in one of the 12 populations. ... between species (67) Although the bacteria in the LTEE are strictly asexual, we can nonetheless imagine testing this criterion by producing ...

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by jevg
Fri Sep 10, 2010 9:18 pm
 
Forum: Evolution
Topic: Experimental evidence for evolution
Replies: 103
Views: 180289

Recombination in RNA viruses,Ruzic,Kovac

... a splicing-like, transesterication mechanism to explain the in vitro generation of recombinants between RNAs associated with Qb bacteriophage ... Muller's ratchet predicts the gradual build-up of deleterious alleles, asexual population. Experiments with RNA viruses, one of only a handful of ...

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by anakovacevic
Sat Jun 12, 2010 8:28 pm
 
Forum: Cell Biology
Topic: Recombination in RNA viruses,Ruzic,Kovac
Replies: 2
Views: 36330

why only 2 sexes

... bacterial cell division , we can consider all instances as mitotic asexual reproduction. However, if we include conjugation into the picture we can say that the daughter generation inherited its genetic makeup from more than one "parent". this ...

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by SelfishGene
Wed Jun 02, 2010 1:16 pm
 
Forum: Evolution
Topic: why only 2 sexes
Replies: 15
Views: 8871

Re: Common ancestor question

... to be a a specific SINGLE organism (if that ancestor is a part of a asexually reproducing species) or a SINGLE PAIR (if that ancestor is a part ... it is caused by a long series of mutations. There is no definite generation when speciation occurs, it is a gradual process, just like the ...

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by SelfishGene
Mon May 31, 2010 6:26 pm
 
Forum: Evolution
Topic: Common ancestor question
Replies: 5
Views: 8971
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