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Disruptive selection occurs when selective pressures favor what?
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Selection occurs when the environment continually eliminates extremes at both ends of a range of phenotypes?
Stabilizing selection.
What process does differential selection and reproduction of phenotype occurs?
cellular differentiation
When organisms carry genes that make them more likely to survive to reproduce the process called what occurs?
natural selection
What process occurs that causes the insecticide to become ineffective?
Possibly due to natural selection.
How evolution occurs via natural selection?
Evolution occurs via natural selection when certain traits become more favorable in a population over time. This is typically due to the environment or natural selection pressures in the population. Natural selection works by favoring individuals with traits that are better suited to the environment while those with less favorable traits may die off or be less likely to reproduce. Over time these favored traits become more common while unfavorable traits become less common. This process eventually leads to evolution as the population changes to adapt to its environment. The three main components of natural selection are: Variation: Individuals within a population have different traits Inheritance: Traits are passed from generation to generation Differential Reproduction: Traits that are more favorable are more likely to be passed onNatural selection is an ongoing process as the environment is constantly changing and influencing the traits of the population. It is important to note that natural selection is not a directed process and does not necessarily lead to a specific outcome. The result of natural selection is determined by the environment and the traits that are favored in the population.
Selection occurs when the environment continually eliminates extremes at both ends of a range of phenotypes?
Stabilizing selection.
Which type of natural selection occurs when the extreme opposites in a phenotype range are selected?
Disruptive selection, also known as diversifying selection.
When does disruptive selection occur?
Disruptive selection occurs when there is selection against the heterozygous individual, causing the population of homozygous dominant and homozygous recessive individuals to increase, splitting the population into two groups corresponding to the dominant/recessive alleles.
What is the difference between selective breeding and natural selection?
In natural selection, the animals take time and evolve slowly. In selective breeding, humans can transfer genes from one organism into another organism.
What five conditions control that rate at which evolution occurs?
Generation time, mutation rate, asexual vs sexual reproduction, strength of selective pressures, population size
Is artificial selection or selective breeding a good analogy for the selection that occurs in nature?
It is possible to have artificial selection in nature because of naturally occurring changes in the environment. These changes can greatly modify the organisms in question.
How is disruptive selection different from directional selection?
disruptive selection favors the extremes of a range of selection Disruptive selection refers to natural selection that favors phenotypic extremes. Example (off the top of my head, but based loosely on reality): Consider a population of seed-eating birds with beaks that range in size, so that big beaks are best adapted to eating big seeds, small beaks are best adapted to small seeds, and medium beaks are best adapted to medium seeds. Now suppose that the source of medium seeds goes extinct (perhaps because of a fungal pathogen). The bird phenotype with medium beaks looses its food source; selection favors the big and small beaks.
When types of selection occurs when individuals in a population with the intermediate phenotype are selected for?
Stabilizing selection occurs when organisms with intermediate phenotypes are selected for.
Eliminating an undesirable trait from a dog breed would probably require the technique of selective breeding called?
Artificial selection is the process of breeding organisms with specific traits in order to produce offspring with identical traits. Natural selection occurs when an organism with favorable variations survive, reproduce and pass their variations to the next generation.
How does natural selection explain specialization?
It doesn't per se. Speciation occurs usually when two gene pools are isolated long enough by geography or by separate selective pressures that one group becomes able to reproduce with the other with difficulty, and eventually not at all. Horses can mate with zebras and a few other animals for instance, but produce sterile offspring. Speciation has been observed in nature many times, and forced to occur in the laboratory. Google "instances of speciation" for examples.
What is the difference between artificial selection and natural selections?
natural selection occurs due to natural phenomena (e.g. changes in diet or predators).artificial selection occurs due to human generated phenomena (e.g. breeding or domestication).
The hypothesis that the evolution of different species occurs?
natural selection
