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Some individual organisms are better equipped to live and reproduce in their environment than others. If what makes them better equipped is heritable, their offspring will be more numerous and will tend to inherit the same traits or qualities themselves. The opposite will happen to those poorly equipped. They will have fewer or no offspring, and their negative traits will tend to disappear from the population as time goes on. These two tendencies are called positive (natural) selection and negative (natural) selection respectively. Natural selection is always relative to the environment. What is advantageous in one environment may not be so in another, and what is disadvantageous (deleterious) in one environment may not be so in another.
What else can I help you with?
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
What does natural selection directly work on?
Natural selection directly works on the heritable traits of organisms that impact their ability to survive and reproduce in a given environment. Organisms with traits that enhance their survival and reproductive success are more likely to pass those traits on to the next generation.
How does natural selection affect the frequency of mutatons?
Natural selection works on mutations that are already in place. The environmental changes will select for certain mutations if the selective pressure is supplied long enough for several generations of offspring to carry a higher percentage of the mutation.
What process in which organisims with traits well suited to an environment are more likely to survive and to produce offspring is?
This process is called natural selection. It is the mechanism by which traits that provide a survival or reproductive advantage to an organism become more common in a population over time.
What comes first mutation or natural selection?
Natural selection can only work on genetic variation that already exists. So mutation comes first, then natural selection.
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
What to learn about evolution by natural selection?
As much as you can, of course. It's a fascinating subject. Start by finding out what natural selection is and how it works.
Why does natural selection work on organisms phenotypes rather than their genotypes?
This is backward, natural selection works on genotype not phenotype.
Which of the three types of natural selection works to preserve genetic variability within the population?
stabilizing
Evolution by natural selection works best on populatin having no variation?
Evolution by natural selection actually relies on variation within a population. Without variation, there would be no genetic differences for natural selection to act upon, leading to no evolution. Variation provides the raw material for natural selection to work with, allowing beneficial traits to be favored and passed on to future generations.
What is the name for the process in which the organisms best adapted to their environment survive?
Its NaTuRaL sElEcTiOn if you didn't know.
Why would natural selection not occur in population?
It has not reached carrying Capacity
Adaptation which allows for natural selection is called?
Adaptation does not allow for natural selection: natural selection causes adaptation.
What is the prefix and suffix of natural selection?
The prefix of natural selection is "natural" and the suffix is "-tion".
How does genetic variation support Natural Selection?
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
The mechanism by which organisms evolve is known as?
Natural Selection
What principles includes variation and competition?
Natural selection.
