How does genetic variation affect the chance that a population will survive changing environmental?
How does genetic variation affect the chance that a population will survive changing environmental conditions? The more genetic variation, the more variety in phenotypes, so it is more likely that some organisms will have traits that allow the population to survive changes.
How does genetic variation affect survival?
A genetically diverse population of individuals is more likely to survive than a population of individuals with similar genetic makeup. Variation allows some individuals within a population to adapt to the changing environment and natural selection allows the expression of those beneficial traits to persist.
Why does genetic variation increase the chance that some organisms in a population will survive?
Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation. Some new alleles increase an organism’s ability to survive and reproduce, which then ensures the survival of the allele in the population.
How do variation enhanced the chances of survival of organisms in different environments and contributed to changes in a pool of genetic information?
Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection).
What is the importance of variation?
Variation is important because it causes evolution and is the basis of heredity. It is advantageous to a population as it enables few individuals to adapt to the environment changes thus, enabling the survival of the population.
What is environmental variation?
the ability of an organism to alter greatly its PHENOTYPE depending upon environmental conditions. The phenomenon is seen most clearly in plants, perhaps because they are fixed in the ground.
What is the benefit of the genetic variation created during meiosis as it pertains to environmental pressures and the process of natural selection?
Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation.
Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment.
Why does genetic variation increase population?
Sources of Genetic Variation
Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.
How do mutations affect a population?
Mutations can introduce new alleles into a population of organisms and increase the population’s genetic variation.
How does genetic drift affect the genetic diversity of a population?
Explanation: Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.