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Which best illustrates the relationship between variations within a population and natural selection?
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How does population change as a result of natural selection?
Natural selection is not a thing that acts on populations, it is a tendency for harmful genes to not be passed on (die out) and useful variations to thrive and become common.
What is disputive selection?
When natural selection favors extreme variations of a trait (ex. Biggest & Smallest)
How do mutations relate to variations within a population?
Essentially, they are what directly causes evolution. Evolution is the shifting of allele frequencies in a population. Variant alleles come into existence through reproductive shuffling, mutation. Natural selection is what then determines in what 'direction' the allele frequencies in the population gene pool shift, whether some variant allele spreads throughout the population, or fades from it.
In an unchanging environment selection in a well adapted population is?
in an unchanging environment, selection in a well adapted population is?
Why does natural selection depend on variations and DNA?
The variations in the DNA are responsible in differences between desirable traits and unwanted traits. Mutations also cause changes in the DNA.
Does natural selection work on preexisting variation in a population?
Natural selection does work on preexisting variations in a population. This is how the population was shaped to be the way that they currently are or were.
What is an important factor of natural selection?
Variations within a population
Why variations are important in human life?
Variations are the basis of evolution, but variations within a population create diversity, which is useful to slow disease and allow natural selection to occur.
What characteristics must population first have for nautral selection to occur?
Individuals are selected, but in the population of organisms there are many variations, some better at survival and reproduction than others, and against the immediate environment, what natural selection really is, these beneficial variations will be selected.
How does population change as a result of natural selection?
Natural selection is not a thing that acts on populations, it is a tendency for harmful genes to not be passed on (die out) and useful variations to thrive and become common.
Natural selection cannot occur without what?
Variations within a population. Variations mean traits that only certain individuals have that give the individual a greater or lesser chance of reproducing.
How do adaptations connect to evolution?
Adaptive change is the province of natural selection and natural selection is one of the main drivers of evolution. Natural selection selects from the individuals variations in a population of organisms on, basically, reproductive success and this adaption is passed on to progeny which changes the allele frequency in the population which is evolution.
Which type of selection in which humans select the variations?
This type of selection is called artificial selection.
What characteristic within populations causes natral selection to occur?
Variations within populations is what natural selection is " looking " for. That one variant of a population is somewhat better able to survive and reproduce than other variants against the backdrop of the immediate environment is natural selection.
What type of selection can create 2 new species from one population?
There are several types of selections that can do this. It includes allopatric speciation where the population is separated by physical barrios, sympatric speciation where variations occur in the population, and allopolyploid when two species merge.
What is disputive selection?
When natural selection favors extreme variations of a trait (ex. Biggest & Smallest)
A series of helpful variations in a series results in?
natural selection
