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the enviroment.
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∙ 14y ago
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How does variation lead to evolition?
Variation is caused by new genetic mutations in a population which lead to different traits in a population. Evolution selets the most useful of these mutation, eventually leading to prominence of new traits within a species or population, or even new species.
Can natural selection act on a population with no variation traits?
The trait is the same for all organisms.
What causes varation in traits?
Genotypic variation is caused by mutation. Phenotypic variation can be caused by mutation, which gives rise to different alleles, or it can be caused by environmental factors.
How does variation in a species help the species survive?
As each new generation is produced, genetic variation may be introduced into a population. The more genetic variation in a population, the more likely it is that some individuals might have traits that will be advantageous if the environment changes.
What are variation traits?
gray wolves variation trait
What term is used by biologists to describe the differences within a population with respect to features such as height?
The term used by biologists to describe the differences within a population with respect to features such as height is "variation". Variation refers to the range of different traits or characteristics that individuals within a population exhibit, including height.
What change in genes or chromosomes that causes a new trait to be inherited?
Mutations create variation in the gene pool by causing new traits to appear
Is skin color the only polygenic trait?
Actually a large number of traits are polygenic. The greater the variation observed in a population the more modifiers are present.
How does biodiversity support evolution?
To have evolution, you must have random variation and differential reproductive success. Biodiversity represents the random variation found in a population. Natural selection, the way in which evolution works, does not create new traits. It only selects them and allows them to become more prevalent in the population. This happens because the organisms with the favorable traits are able to produce more offspring. Without biodiversity, these traits might not exist in the first place and so could not be favored.
What is the organism that carries invisible traits?
genetic variation
Why genetic variation is of to benefit to a population?
It can provide resistance to diseases or other beneficial characteristics. -variation in more competitive species than our own can result in natural selection that is better focused to the specific environment: there is a bigger range of characteristics, so the best traits allow those members to survive longer and therefore mate more. This allows the species overall to constantly reproduce the beneficial traits and flourish.
What tends to increase genetic variation in a population?
Genetic variation is the total amount of genetic diversity present within a species or population. The amount of genetic variation in a population will depend on a variety of factors, including the size of the population, the type of reproduction, and environmental influences. The primary way to increase genetic variation in a population is through mutation. Mutations are random changes in the genetic code that can lead to new traits or characteristics. Mutations can be caused by environmental factors, such as exposure to radiation or chemicals, or they can occur spontaneously. Mutations can be beneficial, neutral, or detrimental to the organism, but they do lead to increased genetic variation. Another way to increase genetic variation in a population is through migration. When individuals from different populations mate, they bring with them different alleles from their home population, increasing the genetic diversity of the new population. This is especially important for populations that are geographically isolated, such as island populations. Another factor that can increase genetic variation is sexual selection. This is the process by which individuals select mates based on certain desired traits. This can lead to an increase in the number of different alleles in the population, as individuals with certain traits will be more likely to reproduce. Finally, gene flow is a process that can increase genetic variation in a population. Gene flow is when individuals from one population move to another population and mate with individuals in the new population. This can bring in alleles from the original population, increasing the genetic diversity of the new population. Overall, while mutation, migration, sexual selection, and gene flow are all important factors in increasing genetic variation in a population, it is important to note that genetic variation can also be decreased by inbreeding and genetic drift. Inbreeding is when individuals mate with close relatives, reducing the number of alleles in the population and leading to decreased genetic variation. Genetic drift is when random fluctuations in allele frequencies occur due to a small population size, leading to decreased genetic variation. Therefore, it is important to consider all of these factors when trying to increase genetic variation in a population.
