natural-selection's questions - English 1answer

212 natural-selection questions.

You don't need to explain to me what the theory of evolution is, or how it works. This question is purely about what exact meaning the word "natural selection" is ascribed to. There seem to be ...

If a particular SNP has very similar MAF value across multiple largely non-overlapping populations, with the assumption of no gene flow between the populations over many generations, would that then ...

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 ...

A vast majority of humans get at least some grey hair as they age. As far as I know this applies to both genders and all races. Presumably this means that at least some grey haired humans have ...

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 ...

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 ...

According to simple models of selection the genetic variance in a population should be reduced by selection. (Fisher's fundamental theorem states that the rate at which a population can evolve is ...

This question is a book request. I am wondering if there are any books with these elements: Tells the history of Darwin's discoveries. Captures Darwin's changing views of the origins of species, ...

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 ...

I often see the breeders equation written like this: $R = h^2s = \frac{V_a}{V_z}s = V_a\beta$ or $\Delta \bar z = G\beta$ But is it possible to get something like this: $\Delta \sigma_z = G\...

Visiting a beach at the ocean, I recently saw a Great Blue Heron dive and catch quite a spiky/large (and colorful! I think it was called a sculpin) crosswise in it's bill. It appeared, potential meal ...

I am aware that there is such a thing called heterozygous advantage, which is due to the presence of a certain single allele, and that an example of this could be with "sickle-cell anemia". I am ...

I was wondering, if scientists ever produce a more complex species from a less complex species by means of natural selection? I imagine something like, bacteria which can't photosynthesis and oxygen (...

Typically, people call viruses some kind of organic compounds that cannot reproduce autonomously and which lower the fitness of their hosts. Even the word "virus" means "venom" in Latin. But from the ...

I'm looking for a commonly used term to describe a trait that has clear current utility but an evolutionary origin that is uncertain and that we do not necessarily wish to emphasize in our description ...

Is this the affinity or core part of intersexual selection (males fighting for access to females)? If females are bound to flock to objectively more attractive man 'A' in the majority of cases, would ...

The problem I've always had with evolution is the actual lack of variation between animals. More specifically, the lack of observable gradual change between species. Take for example the hammerhead ...

As I read the maintenance or removal of an allele from a population is dependent upon the alleles in its linkage group; so, when an advantageous mutation occurs in the population, variation in nearby ...

The context: the other day I was reading an article about a peculiar species of ant that when threatened by a predator would “explode” in order to help protect the rest of the colony, although it ...

If a trait would be advantageous to an organism then why hasn't it evolved yet? Conversely, if a trait is not advantageous or mildly disadvantageous, why does it exist? In other words why does ...

Quoting wikipedia: Greater choice and variety of mates increases a female's chance to produce more viable offspring. This led me to the question: "How sperm parameters are connected with entity ...

I have conducted a lab with my IB Biology 11 class, regarding changes in allele frequencies within generations overseeing the natural selection of an advantageous phenotype. We were looking to ...

Consider the following two situations: A species X has trait $T_1$ that is gradually selected for by some characteristic $E_1$ in some ecological niche but it turns out that the genes for $T_1$ also "...

My professor wrote the following on one of his lecture slides: For X-linked recessive disease, only a third of the mutant alleles are under selection pressure, so if the disease incidence is stable, ...

I noticed that many black-ish people I've met have bigger lips than the white-ish people I've met. However, not all black-ish people have big lips. Is there any explanations in terms of natural ...

Humans are somewhat notable for the slow rate at which they grow and reach physical maturity. Some related primates also take over a decade to reach sexual maturity. However, many mammals – ...

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: ...

Background ---- Notations and assumptions ---- let $W_{ij}$ be the fitness associated to the genotype $AiAj$. $x$ is the frequency of the allele $A1$ in the population. The frequency of the allele $...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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: ...

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:...

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 ...

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?

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 ...

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 ...

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 ...

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 ...

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 ...

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,...

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 ...

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 ...

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 ...

Related tags

Hot questions

Language

Popular Tags