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12 votes
Accepted

Novel bacterial strains of bacteria first isolated on the International Space Station, did the space environment lead to these genetic changes?

The authors propose that this is a distinct species based on a number of physiological and genetic tests. To quote the summary of your linked paper In summary, the phylogenetic and genetic ...
bob1's user avatar
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6 votes
Accepted

What's the correct name for the war of sexes in evolution?

Sexual Conflict is the word you are looking for! Sexual Conflict occurs whenever the optimal mating strategy for the female and the male differ. For example, in Drosophila, it is beneficial for a ...
Remi.b's user avatar
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5 votes

Has artificial selection / selective breeding ever been targeted at intelligence?

Has it ever been attempted to breed a species, for example dogs, to maximize some aspect of intelligence? Yes, perhaps unintentionally, but certainly to serve a purpose: to better herd sheep. Border ...
anongoodnurse's user avatar
4 votes

Does anyone know of a study supporting predictions #2 or #9 of the Extended Evolutionary Synthesis?

There is no debate The so-called Extended Evolutionary Synthesis (EES) is just a new term for a whole lot of knowledge that roughly speaking everyone acknowledge to be true. EES is really just an ...
Remi.b's user avatar
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4 votes
Accepted

Is there any running experiment to selectively breed non-human smart animals?

The question is rather hard to answer as the measure of intelligence can be defined within many different aspects. I am not aware of specific 'breeding' approaches in this context. Moreover, it also ...
Philippe VdS's user avatar
3 votes

What is the mathematical relationship between selection coefficient and dN/dS

dN/dS is usually calculated for an alignment or a phylogenetic tree as if the gene is haploid. Dioloidy is an interesting complication, since it can render deleterious mutations neutral. Selection ...
Roger V.'s user avatar
  • 3,852
2 votes

What's the correct name for the war of sexes in evolution?

I would like to expand a little on Remi.b's answer and point out that there are two key forms of sexual conflict. Sexual conflict arises when the sexes have different routes by which they maximise ...
rg255's user avatar
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2 votes

When is it reasonable to assume selection for an observed change?

Some genetic changes occur too fast for selection to take place. Can you please define "genetic change"? Selection can only change the frequency of alleles in a population. It cannot make a new ...
Remi.b's user avatar
  • 68.1k
2 votes

Has artificial selection / selective breeding ever been targeted at intelligence?

The Wikipedia article on "Selective breeding", which I went to while composing a comment on your question, has this sentence: A Soviet attempt to breed lab rats with higher intelligence led ...
Ben Bolker's user avatar
  • 5,364
2 votes

Is there any running experiment to selectively breed non-human smart animals?

I think you will have to take an answer here that is not the answer you wanted. I truly believe that there is no secret base making an army of intelligent dingo soldiers. We are currently at the ...
shigeta's user avatar
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2 votes

Why is linkage disequilibrium high on either side of a beneficial mutation, but not between sites across the mutation, during a selective sweep?

In addition to the other great answer, I would like to revisit my question because I came across a stellar explanation in another paper I am now reading that also answers the question very succinctly ...
arara's user avatar
  • 706
2 votes

Why is linkage disequilibrium high on either side of a beneficial mutation, but not between sites across the mutation, during a selective sweep?

High-level answer Obviously, if the positively selected site occurs on a single haplotype, then all the polymorphisms on that haplotype "win" due to hitchhiking and will have some degree of ...
Maximilian Press's user avatar
2 votes

Can a trait be too successful? Wouldn't overwhelmingly successful traits limit variability, which is one of the requirements of NS?

Yes, in neutral theory of evolution this is called fixation - when all the alleles (for a given locus) become identical. Note that it may happen, even if the gene does not have a striong selective ...
Roger V.'s user avatar
  • 3,852
1 vote

Interpretation of narrow-sense heritability over one (using R/S = h^2)

From this paper discussing the pitfalls of using the breeder's equation: The breeder's equation provides a useful framework for conceptualizing the process of adaptive evolution by natural selection: ...
Maximilian Press's user avatar
1 vote

Interpretation of narrow-sense heritability over one (using R/S = h^2)

Check your assumptions. It looks like you're using a formula that assumes linear, additive variance. Your data suggest a system that does not follow these assumptions, so the equations are not valid ...
Bryan Krause's user avatar
  • 46k
1 vote

Selection marker for a cytoplasmic vector that works at low expression levels?

Flow cytometry looking for your plasmid. These folks labeled their plasmid with a proprietary fluorescent marker, then used flow cytometry to detect cells which had taken up the plasmid. A novel ...
Willk's user avatar
  • 2,964
1 vote

Does reversion of resistant strains to wild-type only occur when no more drug pressure is exerted

I am not an expert on HIV but I am answering based on general principles. This is a typical example of selection of individuals/populations with different fitness. Reversion to wild-type (WT) would ...
WYSIWYG's user avatar
  • 35.6k
1 vote

What is it called when there is natural truncation selection?

Truncation selection The term truncation selection has been used a lot in theory papers because it is a simple model and because it is of interest to breeders. Truncation selection is most likely ...
Remi.b's user avatar
  • 68.1k
1 vote
Accepted

Selective breeding and Mutagenesis

Yes, GMO are safe to consume! See Is Genetically Modified food safe to consume?. Now, there are other (potential or real) issues related to the use of GMOs such as for example a loss of genetic ...
Remi.b's user avatar
  • 68.1k
1 vote

Evolutionary advantage of consciousness

DISCLAIMER I know little on the subject. I want to first express my personal views of the existing difficulties at answering this question and then I will attempt to give a short overview of the ...
Remi.b's user avatar
  • 68.1k
1 vote

What is the difference between disruptive, divergent and diversifying selection?

I think you are conflating selection and evolution. Diversifying selection is when the variance of a trait in the population increases and even potentially becomes bimodal. This may lead to divergent ...
emilliman5's user avatar
1 vote

LacZ' selection: blue colonies despite ligation of insert

Most inserts will disrupt beta-gal expression (by shifting the reading frame and introducing stop codons) and therefore remove the enzymatic activity required to cleave X-gal and produce the blue ...
aesthete's user avatar
  • 351
1 vote

How do harsh conditions cause an increase in the male birth ratio?

Issues with the post Sexual selection is a mode of natural selection where members of one biological sex choose mates of the other sex to mate with (intersexual selection), and compete with members ...
Remi.b's user avatar
  • 68.1k

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