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How do monkey flowers near mines show that the natural selection causes evolution?
Monkey flowers near mines exhibit variations in traits, such as flower color and chemical composition, that allow them to thrive in contaminated soils. Those with adaptations that reduce toxic metal uptake or enhance survival in harsh conditions are more likely to reproduce and pass on their advantageous traits to the next generation. This process of natural selection leads to an evolutionary change in the population over time, demonstrating how environmental pressures can shape species. Thus, the observed adaptations in monkey flowers serve as a clear example of evolution driven by natural selection.
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What question did both Lamarck and Darwin try to answer with their theories of evolution?
What is the mechanism that causes evolution. Both knew evolution occurred and occurs but did not know how or why. Lamark's " desire to evolve " and " acquired characteristics " failed to explain evolution. Darwin's theory of evolution by natural selection was the better explanation.
Why did Lamarck think evolution involved that causes his ideas to be incorrect?
Lamarck believed that evolution occurred through the inheritance of acquired characteristics, meaning organisms could pass on traits they developed during their lifetime to their offspring. For example, he thought that if a giraffe stretched its neck to reach higher leaves, its offspring would inherit longer necks. This idea was incorrect because it does not account for genetic variation and natural selection, which are fundamental mechanisms of evolution as understood today. Modern genetics shows that traits are inherited through genes, not acquired characteristics.
Why has the evolution of predators and their prey been called a co-evolution arms race?
Because when, say prey, develop faster running ability this causes selection for faster running ability in the predator. If prey develop better camouflage then predators are selected on the basis of better eyesight and then prey turns around and is selected on the basis of better camouflage, or some other adaption that insures survival and reproductive success of individual prey. An arms race that is constrained by what is physically possible and what evolution can tinker p on what is already there.
How might prairie fires set from natural and human causes have affected the evolution of fire resistance in prairie grasses?
Periodic fires are extremely important in grasslands. Many plants of the prairies have developed heat-resistant seeds that need the heat in order to germinate. Some other plants have very deep root systems that have adapted to be capable of surviving the fires.
What is name for a force that makes the honey drop on the floor?
The force that causes honey to drop on the floor is gravity. Gravity is the natural force that pulls objects towards the center of the Earth.
Which is more likely to be true natural selection or evolution?
Evolution, of course. Evolution can happen without natural selection in some cases; drift, flow. Generally though, natural selection causes evolution and then, by definition, would come first.
Which force of evolution makes a population more alike?
Stabilizing selection occurs when the extreme forms of some trait are selected against by natural selection. It is a force of natural selection which causes evolution (definition: change of allele frequency in a population divided by time).
Is natural selection a form of adaptation?
Natural selection is what causes adaptation.
Adaptation which allows for natural selection is called?
Adaptation does not allow for natural selection: natural selection causes adaptation.
How do monkey flowers near mines show that natural selection causes evolution?
Copper tolerance in monkey flowers is an example of a direct observation of evolution. Natural selection favors the survival and reproduction of copper-tolerant plants in copper-contaminated soils. Therefore, the allele for copper tolerance must have been present in some plants when the soil became contaminated. Because copper tolerance provides no benefit to plants in uncontaminated soils, the trait is not as common in plant populations growing outside the contaminated area. they had sex.
What question did both Lamarck and Darwin try to answer with their theories of evolution?
What is the mechanism that causes evolution. Both knew evolution occurred and occurs but did not know how or why. Lamark's " desire to evolve " and " acquired characteristics " failed to explain evolution. Darwin's theory of evolution by natural selection was the better explanation.
Is adaptation a cause of natural selection?
No, it's exactly the other way around: natural selection causes adaptation.
What process causes adaptations to evolve?
Natural selection
What factor of natural selection causes competition?
Overproduction
what causes natural selection to occur?
the presence of predators
What process causes evolution?
Evolution is driven by natural selection, genetic drift, gene flow, and mutations. These processes lead to changes in the genetic makeup of populations over generations, resulting in the accumulation of adaptations that help species survive and reproduce in their environment.
What is true about nature selection?
Natural selection usually causes a species to change gradually
