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Variations arise due to recombinations(gene rearrangements) ,mutations etc.The former is the principal source of variation in sexually reproducing organisms and the latter is the source of variation in asexual organisms.According to Darwin variation arises due to chance since all the above mentioned process occur in nature spontanuously all organisms show variation
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What would happen if there was zero variation between all of the organisms on earth?
Evolution cannot occur.
What is the central force driving evolution?
Reproductive variation is central to evolution. All else in evolutionary theory follows directly or indirectly from the fact that organisms reproduce with variation.
How variation contributes to the survival of the organisms as far a sharks?
no one knows....
Why is variation important for natural selection and what are the main sources of this variation?
Without variation natural selection would have nothing to select from that would confer survivability and reproductive success. on the organisms being selected against the organisms conspecifics and the immediate environment. Mutation and sexual recombination provide the main sources of this variation that is needed to make selection work. Mutation is the variation presented that causes the real adaptive change that can lead to speciation.
What is the selection by humans for breeding of useful traits from the natural variation among different organisms?
its all based on ressesive vs. dominate traitts and backround and luck.
Which is a source of genetic variation in sexually-reproducting organisms?
Basic source of variation in all organisms is mutation .
Can natural selection act on a population with no variation traits?
The trait is the same for all organisms.
What is slight differences among objects or organisms that are all the same basic type?
VARIATION
What do all organisms have that is invisible because it involves small differences in biochemical processes?
Genetic Variation
What would happen if there was zero variation between all of the organisms on earth?
Evolution cannot occur.
Why do populations of asexually reproduced organisms show little variation?
There is no natural selection and therefore no evolutionary need for a difference between genders.
What is the study of genetics?
The science of genes, heredity, and the variation of organisms.
What are the two types of variation shown by living organisms?
nonsense ,dum and crazy are the two types variation shown by living organisms.
What is the importance of variation in organism?
Variation is important among organisms for us to indicate which is which :))
What are variation?
gray wolves variation trait
What are the islands where Charles Darwin observed variation among organisms?
Galapagos Islands are the islands where Charles Darwin observed variation among organisms.
What is the slight difference among objects or organisms that are the same basic type?
VARIATION
