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What must individuals with a trait do in order for evolution to occur in the population?
Wiki User
∙ 13y ago
The trait must be in the germ line, it mist be passed on t progeny who thrive well enough to pass it on in an amplified manner, it must be beneficial, that is confer reproductive advantage and then the frequency of this allele must come to fixation in the populations gene pool. Then evolution, the change in allele frequency over time in a population of organisms has occurred.
Wiki User
∙ 13y ago
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What are the conditions a population must meet in order to have genetic equilibrium?
1. No net mutations occur; that is, the alleles remain the same 2. Individuals neither enter nor leave the population 3. The population is large (ideally, infinitely large) 4. Individuals mate randomly 5. Selection does not occur
What is a population what componets must be identified in order to define a population?
individuals, time, and place.
In order for evolution by natural selection to occur what has to happen?
There must be genetic variation, the variation must be heritable, and there must be differential reproduction (due to competition).
What must happen in order for evolution to exist?
Without heredity what use would there be to selection and why evolution? Just take beneficial mutations in the germ line for example. No heredity and nothing to enter the populations gene pool and no evolution. No heredity and there would be no variation in populations and the first environmental challenge would carry your population to extinction.
What did Charle Darwin compare on the bird and what caused the difference?
He didn't do the study of the Galapagos Finches. The people who studied these birds were biologist Peter Grant and Rosemary Grant. They looked at beak size and shape. The finches are commonly called Darwin's finches, however, they really were not studied by him. They used to finches to study Darwin's Theory of Evolution by Natural Selection. In order for NS to occur there must be variation in a population, variations must be heritable, the species must be reproductively successful, and the survival and reproduction of an individual must be nonrandom. The Grants came up with 4 postulates based on the NS model. 1. Is the finch population variable? 2. Is some off the variation among individuals heritable? 3.Do individuals vary in their reproductive success? 4. Are survival and reproduction nonrandom? The overall conclusion that they made was that: when all four of Darwin's postulates are true in a population, the population will evolve; and that evolution an occur over a short period of time.
Why must a population have a genetic variation in order for natural selection to occur?
Without variation there is nothing to select from.
What are the steps of stellar evolution in order?
You can find an overview of stelar evolution in the Wikipedia article entitled "Stellar evolution".
What must occur in order for a population to diverge?
Usually a change in the envirnoment where one group will do better and the other group will move to find a new place where they can thrive.
Why must there be variation in a population in order for natural selection to occur?
What would there be to select from if all the organisms in a population were not different in morphology and behavior. Some of these differences are reproductively successful against the immediate environment, and that environment is the natural selector.
What do you think precipitate the rise and falls of the civil right and public order?
This is dependent on the balance of equality between what is right for the state and what is fair for the individuals, as public disorder can occur if people feel they are not being treated fairly.
Which major change can occur in a small population that is the result of genetic drift?
One problem is that the population will loose it genetic variation. With little genetic variation a population is less likely to have some individuals that will be able to adapt to a changing environment.
What do you think precipitates the rise and fall of civil rights vs public order?
This is dependent on the balance of equality between what is right for the state and what is fair for the individuals, as public disorder can occur if people feel they are not being treated fairly.
