Natural Selection

Charles Darwin is credited as the discoverer of the theory of natural selection. Darwin's work on evolution through natural selection was presented in his book "On the Origin of Species," published in 1859.

Wheat is a crop that has been domesticated through artificial selection, not natural selection. Humans selectively bred wild grasses over thousands of years to enhance desirable traits such as seed size, yield, and resistance to diseases, resulting in the cultivated wheat we have today.

The four types of natural selection are stabilizing selection (where the average phenotype is favored), directional selection (where one extreme phenotype is favored), disruptive selection (where both extreme phenotypes are favored), and sexual selection (where traits that increase mating success are favored).

The most common type of natural selection is stabilizing selection. This type of selection favors average traits in a population, reducing genetic diversity and maintaining the status quo of a population's characteristics.

Darwin created the theory of natural selection to explain how species evolve and adapt to their environment over time. He observed variations in organisms and environments that led him to propose that only the fittest individuals with advantageous traits would survive and reproduce, passing on those traits to their offspring. This process drives the gradual change and diversity seen in living organisms.

First, I should mention that 'micro-evolution' is not a process in itself. Rather, it is a perspective on the effects of evolution. 'Micro-evolution' is those effects seen from close-up; by 'zooming out' one sees those same results in a wider scope called 'macro-evolution'. All evolution is driven by genetic variation and natural selection. Natural selection drives evolution by filtering out some variations while promoting others, thereby directing the slow change of morphology and behaviour of populations.

didn't you just do that? or did you mean something else? ...

Or........... Over time, the change in a species is called evolution. and. Natural selection helps certain animals in a species survive.

At the beginning of the selection in Iliad, Achilles is angry with Agamemnon and refuses to fight in the Trojan War, leading to a conflict between the two that sets the stage for the events that follow.

Evolution and natural selection can involve gradualism, where small changes accumulate over time leading to larger changes in a population. However, there are also instances of punctuated equilibrium, where rapid changes occur in bursts followed by periods of stability. Both gradualism and punctuated equilibrium are important aspects of evolutionary theory.

Natural selection leads to evolution by favoring individuals with advantageous traits that are better suited to their environment. These individuals are more likely to survive, reproduce, and pass on their advantageous traits to their offspring, gradually changing the gene pool of a population over time. This process of accumulation of beneficial traits and elimination of detrimental traits leads to the evolution of new species over generations.

Natural selection was formally accepted as a major mechanism of evolution in the 19th century with the publication of Charles Darwin's seminal work "On the Origin of Species" in 1859. However, the concept of natural selection was not widely accepted until later in the 20th century when more evidence in support of the theory accumulated.

Evolution produces new species. Macro-evolution is the term used to indicate such divergence at a scope beyond that of the single species. It's not referring to a different process, but to a different perspective on the same process.

Selection occurs when there is variation in a population, that variation is heritable, and individuals with certain traits have a higher chance of survival and reproduction. This process allows advantageous traits to become more common in a population over generations.

It's not always a contradiction for an evolutionary biologist to believe in God or a religious person to believe in evolution.

In Judaism, for example, there are some theories, interpretations and beliefs which actually compromise between the two schools.

Natural selection is the phrase used to describe the phenomenon of differential reproductive success, meaning that some variants will, on average, produce more offspring than other variants, allowing the alleles that give them this reproductive fitness to spread throughout the population at a faster rate than their rival alleles.

Basically, natural selection is what gives evolution "direction." Without natural selection, evolution could be imagined as an expanding circle, with new genotypes forming in every direction. With natural selection, evolution becomes a line that moves off into a particular direction, determined by environmental factors.

So imagine putting a pencil on a piece of paper and drawing a short stretch of line. That's what a short period of natural selection does. Now to understand what longer periods achieve, just extend the line.

Of course in reality, conditions are always changing, so the line won't be a straight line. Also, sometimes speciations occur, and the line will split into two or more lines, like a branching tree.

But basically what happens is that life changes and will continue to change, further and further away from the starting point of the line.

Darwin's principle of natural selection states that individuals with traits better suited to their environment are more likely to survive and reproduce, passing on those advantageous traits to their offspring. Over time, this process leads to the accumulation of beneficial traits in a population, increasing its overall fitness and adaptation to its environment.

I don't think there's a certain type as such. Selection and Elimination can be structured or random. Random is self-explanatory, structured, is based on the individual/the criterion, i.e. I will pick all the green and red Easter eggs out of a packet, etc.

The girl guppies are going to prefer the most brightly colored boy guppies. The plain color dull boy guppies will reproduce less. These two facts will continue as the guppies continue to reproduce. At the same time, those brightly colored boy guppies won't be happy with other brightly colored boy guppies, so there will be biting and bickering until some of the weakest brightly colored boy guppies will get injured and die off. The genes of non-related plain dull boy guppies won't get passed on, because they won't get a chance to breed; their gene lines will end as they die off.

Assuming the tank and fish get enough filtration, air, and food, that tank will quickly fill up because guppies do like to breed. But over-crowding will kill off the weakest. Even the extremely plainest girls might not get picked by the brightest-colored boys so the girl population could suffer, too.

And if more male guppies are born than female guppies, soon you'll have a tank of really grouchy guys who all want to be God-Guppy of the tank. Any girls left might even go into hiding to get away from the fighting.

Eventually, there won't be reproduction, because either girls have died off too or the girls try to stay away from aggressive boys, and the most aggressive boys will kill off the weakest guys. Plus, guppies do eat their tiniest babies.

So you'd end up with a tank of grumpy guppy males too scared of the God-guppy to even swim much..... making a very unhappy guppy life in a tank...

Yes.

Example:

Two zebras are running away from a lion. Zebra A has harder hooves than Zebra B, and therefore Zebra A can run faster. Since Zebra B is slower, it eventually gets caught by the lion. Zebra A then goes on to reproduce, passing his hard hoof gene down to his young. Following this pattern, eventually all zebras would have hard hooves. This is an example of natural selection resulting in evolution.

organization differ in the manner of selecting job applicants. some require onLy the filling-up of appLication forms and a brief interview. some organizations, however, use more eLaborate seLection methods. in any case, proper seLection is necessary if the organization is to be efficient and maintain its competitive position.

The selection process in multinational organizations typically involves screening resumes, conducting interviews (potentially multiple rounds with different stakeholders), assessing candidates' skills and experience, and making a final decision based on the best fit for the role and organization. This process may also include assessments, reference checks, and background verification to ensure the chosen candidate meets the requirements and standards of the organization.

The general public in the USA is split roughly three ways:

- Those who hold to a more or less literal reading of the Biblical account (some 30%)

- Those who accept a naturalistic evolution (another 30%)

- Those who believe in a form of theistic evolution (some 20%)

(The remaining 20% didn't say.)

Note that these figures are completely different if one polls only the higher educated people, or the scientific community, where support for evolution is pretty much complete.

Natural selection acts on individuals within a population that exhibit variations in traits that affect their ability to survive and reproduce. Individuals with beneficial traits are more likely to survive and pass those traits on to their offspring, leading to an increase in the frequency of those traits in the population over time. This process ultimately results in the adaptation of populations to their environment.

Testing helps to ensure that candidates possess the necessary skills, knowledge, and abilities required for the job. It provides objective data to aid in decision-making, reducing the risk of hiring individuals who are not a good fit for the role. Testing also helps to create a fair and transparent selection process that is based on merit.

Factors such as system complexity, impact on operations, user acceptance, cost, time frame, and risk tolerance are considered in the selection of a system changeover strategy. It's important to assess these factors to determine the most suitable approach, whether it's a direct changeover, parallel changeover, phased changeover, or pilot changeover. Each strategy has its own advantages and challenges that need to be taken into account during the decision-making process.