Why is variation important to the evolution of species?

Why is variation important to the evolution of species?

Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.

What is the importance of the variations?

Complete answer: Variations refer to the changes that are seen in the case of the genetic makeup of an organism. Variations in organisms arise due to the sexual reproduction and ensure the natural selection of the individual and in turn make the organism better adapted to the environment.

What is the advantage of variation in a species?

Advantage of Variation The advantage of having variation within a population is that some individuals will be better adapted to their environment than others. Those individuals who are not well adapted to their environment are less likely to survive and reproduce.

What is the importance of variation within species intraspecific variation for evolution to take place?

Collectively, we show that variation within species is often as ecologically important as variation across species. Sometimes, replacing individuals from one population with those from another of the same species elicited as strong an ecological response as removing those individuals entirely.

What are the two main reasons for variation between organisms of the same species?

Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.

What is variation and why it is important?

It helps in better survival of an organism. Accumulation of a particular variation over time leads to speciation. Variation results in genetic drift where same species are distanced. The useful variations are passed on to the next generation which is necessary for adaptation of an organism.

What are the three advantages of variation in individuals?

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Why is intraspecific variation important?

Understanding the ecological effects of intraspecific variation is important for models predicting the consequences of biodiversity loss and rapid trait change19,20. When generated by plasticity, traits can change rapidly within generations and differ drastically across populations in dissimilar habitats27.

Why is variation important in an ecosystem?

Variation within species affects how organisms interact with each other and their surrounding environment. For example, the size of a fish’s mouth, known as its gape, determines the size of prey it can eat. And the variety of noxious chemicals a plant produces controls which insects chew its leaves.

Why is variation important in evolution?

Variation is important for evolution because if there was no variation everyone would be the same and look a lot alike. Like in Darwin’s theory, there is different islands with different species on them and that shows that there was variation.

What is the importance of genetic variation?

Human genetic variation plays a key role in determining individual responses after exposure to infectious agents.

What is the role of variation in evolution?

ROLE OF VARIATION IN EVOLUTION IS TO PREVENT THE SPECIES ON EARTH BY CHANGE IN GENETIC MATERIAL OF AN ORGANISM. it is variation which makes some species fitter for survival in comparison to others. since the resources are limited so those who are fitter take part in evolution process whereas others become extinct.

What is variation in species?

Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).