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A small number of finches live in a protected bird area. They are given as much food as they need and have plenty of space. Why would natural selection not occur in this population?
Isaiah Bailey-gilyar...
There is no need for it to occur. Only if the environment changes and less food is found would there be a change. The environment selects the birds that do the best under the new conditions and the others will die.
Derick Treutel
In this scenario, natural selection may not occur because the finches have all their needs met, so there is no competition for resources that would drive the process of natural selection. Without environmental pressures or challenges, there is no selection pressure acting on the population to drive evolutionary changes.
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Does natural selection work on preexisting variation in a population?
Yes, natural selection acts on preexisting genetic variation within a population. Individuals with traits that give them a survival or reproductive advantage are more likely to pass on their genes to the next generation, leading to an increase in the frequency of those advantageous genes in the population over time.
What are the different ways in which individuals with a particular trait may increase in a population?
Individuals with a particular trait may increase in a population through natural selection, genetic drift, gene flow, and mutations. Natural selection favors individuals with advantageous traits, genetic drift leads to random changes in allele frequencies, gene flow introduces new alleles into the population, and mutations create new genetic variation.
What tends to result in a population whose individuals have extreme traits?
Natural selection can lead to extreme traits in a population if those traits provide a significant advantage in survival or reproduction. Genetic drift can also lead to extreme traits if there are random fluctuations in the frequency of alleles in a population. Additionally, sexual selection can drive the evolution of extreme traits if individuals with those traits are preferred as mates.
What is the source of new traits in a population?
New traits in a population can arise through mutations in the DNA of an organism. Mutations are changes in the genetic code that can result in new characteristics that may be passed on to offspring. These traits can then be subject to natural selection and other evolutionary mechanisms.
Microevolution can occur when some individuals in a population survive and reproduce more often in a new environment what is this an example of?
This is an example of natural selection, a process in which advantageous traits for a specific environment are passed on to future generations, leading to changes in the population over time.
What body part of the Galapogos finches appears to have modified by natural selection?
The finches beaks were modified by natural selection. The beak size and shape varied from island to island.
What body part of the Galapogus finches appears to been most mosified by natural selection?
The finches beak!!!
What feature of Galapagos finches was important to Darwin in developing his theory of natural selection?
He noticed that there were different species of finches.
What are Darwin's finches a great example of?
Adaptive Radiation or Natural Selection (:
A small number of finches are removed randomly from the wild and placed in a protected bird area. they need and have plenty of space. why would natural selection not occur in this population?
The population has not reached carrying compacity is correct on apex
How finches adapted different beak sizes on the galapagos islands?
natural selection
Research on Galapagos finches by Peter and Rosemary Grant showed type of natural selection is called what?
Directional Selection
The different species of finches on the galapagos island are believed to have arisen as a result of natural selection acting on populations of finches that had experienced?
Evolution
Relate natural selection to the beak sizes of finches?
The numbers of birds with different beak shapes are changed by natural selection in response to the available food suply.
The similarities in the Galapagos finches implied?
The Galapagos finches only exist on the islands and inspired Charles Darwin. They implied that evolution occurs through natural selection.
Which 2 scientist demonstrated that natural selection is still at work in the evolution of finches?
Rosemary and Peter Grant.
What did Darwin hypothesized about the different finches on the Galapagos islands all had a what?
they all evolved from one finch by natural selection.
