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21 votes
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Why aren't cat hybrids common?

In order to form a hybrid, substantial genetic similarity between the organisms is required. To understand why, the successful formation of a zygote from the gametes of the two parents (i.e. ...
Anon's user avatar
  • 837
12 votes
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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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9 votes
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Can domestic breeding be considered evolution?

Yes, selective breeding results in evolution. Definitions of evolution I don't understand why you say that for 3 of the definitions you found, selective breeding would not be considered as evolution....
Remi.b's user avatar
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6 votes
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Could we back-breed birds into dinosaurs?

Do birds descend from dinosaurs? First, it is confusing to say things like Birds descend from dinosaurs Humans descend from monkeys Mammals descend from vertebrates Snakes descend from animals It ...
Remi.b's user avatar
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5 votes

Can hunting of large specimens of a species make the size and weight of the species tend to be smaller?

I don't know of any research about this on tigers or any other terrestrial predators, but this is a well-known phenomenon in "trophy" animals1 (i.e. big game hunted for sport) and wild-...
tyersome's user avatar
  • 5,598
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
5 votes
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Is it possible to breed neanderthals through selective breeding?

No, it is not. As you said only 1-4% of non-subsaharan africans' genome is from Neanderthal and it is more or less the same sequences. The entire Neanderthal genome is not present in modern day humans,...
Remi.b's user avatar
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5 votes

Can people be bred for tameness in a similar way to Russian foxes?

Setting aside the eugenic implications of what are you suggesting (short answer: yes it is theoretically possible, but no it is practically impossible), a more interesting observation is that ...
kmm's user avatar
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4 votes

How is "selection" best defined?

My favourite definition Selection is a fitness differential associated to a genetic variance among individuals in a population. You might want to have a look at What does fitness really mean?. What ...
Remi.b's user avatar
  • 68.2k
4 votes
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Is there any artificial species (in particular, an artificial species of animal)?

Artificial selection leading to new species - Domestication As you talk about dogs in your intro, let's consider them. You will fail to breed a great dane and chihuahua for obvious mechanical ...
Remi.b's user avatar
  • 68.2k
4 votes

Can domestic breeding be considered evolution?

The answer is "yes". Evolution is defined as a change in heritable characteristics of a population over generations, and to me, there is no reason not to define domestic animals as populations. The ...
Mikko's user avatar
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4 votes
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Is it possible to artificially select for flight in pigs?

Intro course to evolutionary biology I doubt you can get much from the below answer. At the end of the day, the only thing that would really allow you to increase your knowledge is probably an intro ...
Remi.b's user avatar
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4 votes
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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

Why is random protein selection not used more often in biotech to create proteins with desired enzymatic activity?

Think about it from a numbers perspective. Briefly, $10^{13}$ is a very small number in the combinatorics of protein sequence space. There are $20^{100} = 1.267651*10^{130}$ possible peptides of 100 ...
Maximilian Press's user avatar
3 votes
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Artifial insemination in milch varieties?

There is no genetic basis for these classifications. Most human genetic diversity is in Africa. Diversity only decreases with geographic distance from this continent. There are geographic clines, not ...
TonyBologna's user avatar
2 votes

how did the domestic dog evolve and was the role humans played in its evolution justified?

Selective breeding, or artificial selection, by its very definition is the selection of desirable traits over less desirable ones. Individuals more like the desired phenotype are allowed to reproduce ...
rg255's user avatar
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2 votes
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identification of purposeful (engineered) genetic changes vs. random mutations

One should be able to tell this from comparison of the sequence with that of the original organism in GenBank etc. The differences in an engineered organism will generally be extensive and of such a ...
David's user avatar
  • 26.2k
2 votes

How is "selection" best defined?

How selection is "best defined" is clearly subjective. However, even though it is a key process in evolution, the exact delimitation of (natural) selection is not clearcut, or rather, authors have ...
fileunderwater's user avatar
2 votes

Is it possible to breed neanderthals through selective breeding?

Selective breeding will select for genetics that are already present in your population, but won't introduce new DNA sequences that aren't carried by any of the population members. It would ...
Nuclear Hoagie's user avatar
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
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2 votes
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'Big ideas' behind constrained selective breeding (optimization)

I believe that you are talking about "multidimensional selection". E.g. you are selecting on not one trait (yield) only but more than one (yield+some other trait). There's quite a bit of ...
Maximilian Press's user avatar
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
  • 28.3k
1 vote

Saving a Maize Landrace from Inbreeding Depression

After planting the 10 seeds, manually cross-pollinate the plants with each other to ensure that (1) there's no self pollination, (2) every seed contributes equally to the gene pool, and (3) no foreign ...
Seun Osewa's user avatar
1 vote

Is it possible to perform selection of plants without seeds?

Most commonly by breeding with a related plant - if there is one. Mutagenesis is an old technique that technically can work. If one part of the plant has mutated, of course you can take cuttings or ...
Polypipe Wrangler's user avatar
1 vote

Is it possible to artificially select for flight in pigs?

Evolution really is all about random rolls of the dice, with natural selection deciding the outcome. The question of pigs flying has a precedence. Birds evolved from therapod dinosaurs (one of which ...
Karl Kjer's user avatar
  • 7,693
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
  • 68.2k
1 vote

Which is a good methodology to find out a domestication process?

Yes, everyone use SNPs today for such analysis. Some RADseq is probably the way to go. Detecting selection is not an easy task as many technics exist which differ by their assumptions and by the ...
Remi.b's user avatar
  • 68.2k
1 vote

identification of purposeful (engineered) genetic changes vs. random mutations

Depends on the type of alteration. If we are talking insertion/alteration/deletion of whole genes, we can easily discover the changes by genome sequencing and comparison. If we are talking a single ...
Jeppe Nielsen's user avatar

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