All Questions
Tagged with genetics natural-selection
51
questions
2
votes
1
answer
565
views
What is "Correlation of growth" according to Darwin and was he correct about it according to modern science?
What are the views that modern biologist have on Correlation of growth? I need some clarification on statement that I'm gonna mention below as well that is it reason to that as mentioned here: "...
- 29
0
votes
1
answer
105
views
Can a trait be too successful? Wouldn't overwhelmingly successful traits limit variability, which is one of the requirements of NS? [closed]
Can a trait be too successful? Wouldn't an overwhelmingly successful trait soon limit the gene pool, and if so, how would the process of natural selection react to that? If an individual is born ...
- 1
0
votes
1
answer
97
views
What is the impact of selection on orthologous and paralogous genes? How would this impact differ in different regions of protein coding genes?
Since paralogs increase the size of the genome and provide more opportunity for the evolution of novel characteristics, would they be more prone to selection?
0
votes
1
answer
385
views
Is natural selection actually random?
In the Theory of Evolution, two main factors take place:
One is random, which are the different mutations that organisms' DNA suffer. This process adds genetic variability to a given population.
The ...
- 113
0
votes
1
answer
740
views
Why is selection less effective in small populations than in larger?
I can understand that the genetic drift has a higher impact on smaller populations, but what does it mean for the selection to be less effective in small populations than higher?
- 155
0
votes
1
answer
180
views
Does natural selection still increase biological complexity?
I recently read The Selfish Gene by Richard Dawkins, which I found very interesting. In one of the last chapters, he gives multiple possible explanations to the question "Why did natural selection ...
- 21
1
vote
1
answer
196
views
What are the implications/predictions of the selfish gene theory?
Are there any testable predictions or implications of the selfish gene theory? Or it is just interesting interpretation of the observations/experimental data? If this theory is not falsifiable and ...
- 23
1
vote
4
answers
302
views
Is variation a result of Evolution?
We know that the DNA copying mechanism that replicates DNA during cellular division is not 100% accurate and the resultant errors are the source of variation in the members of a population.
At the ...
- 129
-1
votes
1
answer
52
views
Can Females Songbirds Have Male Plumage?
Male birds are colorful for courtship displays, females are dull for camouflage. But, is written in a website somewhere that sometimes, when females birds are sterile, they grow male plumage due to ...
1
vote
0
answers
2k
views
What are the advantages of sexual reproduction over asexual reproduction? [closed]
What are the advantages of sexual reproduction over asexual reproduction?
How does variation influence ecological and evolutionary success?
- 63
1
vote
0
answers
37
views
Finding intensity of selection against dominant homozygotes
I was looking at some Olympiad questions and came across the following:
If the frequency of a completely recessive allele is $0.2$ and it remains unchanged from generation to generation due to ...
- 111
1
vote
1
answer
124
views
Balancing selection vs introgression? [closed]
Balancing selection can maintain polymorphisms in natural populations for extended periods of evolutionary time. However, in this paper, Dannemann et al. 2016 identify three archaic haplotypes in the ...
- 19
-1
votes
3
answers
120
views
You need DNA to make RNA, and RNA to make DNA, so they had to come into existence at the same time?
A statement I recently read: 'Evolution is debunked and gives no basis for morality. Natural Selection throws away info, it does not add.
You need DNA to make RNA, and RNA to make DNA, so they had to ...
- 7
32
votes
1
answer
5k
views
How could a species be engineered to go extinct?
Non-biology background here.
I read this very interesting article: https://www.wired.com/story/crispr-eradicate-invasive-species/
However I am having a hard time wrapping my head around something:
...
- 423
-1
votes
2
answers
157
views
How did humans know the process of domesticating animals?
If people in ancient times had no scientific knowledge about natural selection and Darwinism, how were they knowledgeable about animal domestication and artificial selection?
What tools and ...
- 117