# natural-selection's questions - English 1answer

207 natural-selection questions.

### 2 Cell-level selection and inheritance of acquired mutations

1 answers, 55 views evolution natural-selection
I was reading about different levels of selection in Ridley's Evolution textbook (chapter on units of evolution) and saw that some organisms e.g. carrots are not Weismannist i.e. don't have separate ...

### 2 Finding for evolution, comparing past flower numbers with present

In a hypothetical species of butterfly, wing spots are controlled by a single locus where BB individuals have blue spots, YY individuals have yellow spots, and BY individuals have green spots. Ten ...

### 2 Is the suicide of a moribund individual to be considered group selection?

When a moribund individual commits suicide (e.g., Refardt, Bergmiller & Kummerli, 2013; http://rspb.royalsocietypublishing.org/content/royprsb/280/1759/20123035.full.pdf), is this to be considered ...

### What is it called when there is natural truncation selection?

Truncation selection is when a breeder selects for animals that exhibit a value for a trait that is above a certain threshold. What is it called when nature selects for a value of a trait that is ...

### How did humans know the process of domesticating animals?

2 answers, 69 views genetics evolution dna natural-selection
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 ...

### 1 Why does a frog's oxygen intake through the skin and lungs vary throughout the year?

2 answers, 122 views zoology natural-selection development
Why does a frogs oxygen intake through the skin and lungs vary throughout the year? And why does the intake through the skin vary slightly while through the lungs dramatically? (Blue line = oxygen ...

### Is it possible to artificially select for flight in pigs?

After reading this rant by Fodor, as a layperson, I was idly wondering whether it would be possible to artifically select for flight in pigs. Of course by that time the porcine lineage will probably ...

### 1 What problem does kin selection solve?

I'm trying to understand what problem led to a development of kin selection. The explanations I've found consist roughly of the following: The existence of some altruistic and cooperative ...

### 5 Fisher's Fundamental Theorem of Natural Selection

Ronald Fisher discovered what he, with humility, called the Fundamental Theorem of Natural Selection. This theorem says (in its modern terminology): The rate of increase in the mean fitness of any ...

### 4 Can mutation rate be selected for?

2 answers, 104 views evolution mutations natural-selection
Can the mutability of DNA be selected for in a population? I don’t mean selection for the phenotype that is the result of a mutation. Rather, can the rate of mutations in a population be increased by ...

### 7 How does Darwinian Evolution work?

5 answers, 746 views evolution natural-selection mutations
Let me explain... A friend and I read some articles, part of a Biology book, and watched a video on evolution. We then tried to explain what Evolution is to each other. My friend said that Natural ...

### -1 Is natural selection a force?

I often hear that natural selection, or simply, selection is a "force". e.g.: the forces of directional selection on correlated life history characters, and an adaptive topography Source: ...

### 6 What is continuous selection?

3 answers, 110 views evolution natural-selection
I've been reading paper on ancient horse genome (Recalibrating Equus evolution using the genome sequence of an early Middle Pleistocene horse) and in abstract authors mention term continuous selection:...

### 1 How can natural selection occur at species level whilst not occuring at the individual level?

2 answers, 3.712 views evolution natural-selection
The chapter by Douglas Futuyma in 'Evolution' (Losos et al 2013, Princeton) states that natural selection can occur at the species level. Futuyma states that if natural selection occurs at the species ...

Same for the terms "selective advantage" and "selective disadvantage" which I intend to use synonymously. There are usages of each on Google Scholar, but do evolutionary biologists understand what is ...

### 4 How do we call a “burst of evolution”?

2 answers, 128 views evolution ecology natural-selection
I have in mind that evolution is not a constant / continuous process and that there are bursts of evolution. Are there terms to refer to the concepts of fast vs slow evolution rates?

### 2 List of the biggest companies that work in selective breeding

1 answers, 582 views evolution zoology natural-selection
Looking at this question, I've been wondering, What are the biggest private companies which work in both animal and non-animal selective breeding? Let me know if Biology.SE is not appropriate for ...

### 31 Why are there species instead of a continuum of various animals?

5 answers, 3.421 views evolution natural-selection
As I understand it, various animal traits have to evolve gradually, but what happens to the species that are "neither here nor there"? To put it differently, if a species evolved from another, it did ...

### 4 How frequent are selective sweeps?

Introduction Selective sweep is the most famous genetic signature of selection. We know of a number of classical examples of selective sweeps, some of them in humans. See the classical example of the ...

### About lack of selective pressure

In [1] it is stated that: the frequency of comutations in FGFR3 and KRAS or PIK3CA and KRAS was lower than predicted by chance, suggesting ... a lack of selective pressure for both mutations to ...

### 5 Why did the face of human species changed so much during the course of its evolution?

I recently watched this video which showed the evolution of facial features of the modern man https://youtu.be/-69K7E0UlBI I'm wondering what evolutionary advantage did we get by having our face ...

### 1 Reducing the Proportion of Phenotype in Hardy Weinberg Population through Selection

1 answers, 115 views natural-selection hardy-weinberg
I was given the following question: You travel to an unknown island and find a population of strangely colored slugs! Upon close investigation, you notice that 16% of the slugs have a shriveled tails,...

### 1 How does natural selection explain how organisms that are poisonous evolved? [duplicate]

Natural selection makes perfect sense when describing the evolution of say camouflage. For example 2 bugs of the same species live on a tree. One is mutated to look slightly more like a tree, so the ...

### 1 What evolutionary reason is there for hemolytic disease?

Nowawadays we have methods which allow us to overcome hemolytic disease of newborn or to prevent it to onset. The Rh or Kell conflict, but how is it possible that it is present? Why it haven't ...

### 3 How is “selection” best defined?

There is natural selection but there is also sexual selection which some regard as a category of natural selection. There is also artificial selection (by humans). The question is, what is a most ...

### 5 Is there a formal definition of signature of natural selection?

1 answers, 765 views evolution natural-selection
I’ve searched for a definition of signature of natural selection. Unfortunately, I haven’t found any formal definition of it. The signature of positive selection ...

### 3 The falsifiability of natural selection [closed]

I was wondering if we could think about experiments to falsify natural selection . According to this wiki : we could invalidate natural selection “...if it could be shown that selection or ...

### 3 how can a recessive allele become represented in a significant number of individuals in a population

4 answers, 981 views natural-selection allele
Darwin believed that individuals that are poorly adapted to their environment are less likely to survive and reproduce. This means that their genes are less likely to be passed to the next generation. ...

### 3 Why didn't humans evolve to reproduce identical twins all the time?

According to the selfish gene theory, it seems like because identical twins sometimes get produced, a mutation to a gene that says, "if you have an identical twin, be fully altruistic towards them" ...

### 4 Is there variation of AT/CG ratio along species?

Chargaff's rules say that the number of Adenine of the number of Thymine in a genome are equal (nA=nT) and similarly nC=nG. This makes obvious sense knowing that C binds to G and A to T. But what ...