In a population of sparrows, most birds have a beak that is about 10 mm long. Some birds, however, have beaks that are slightly longer or slightly shorter than the average. Explain why the variation within this population is important in terms of survival and individual sparrows

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Differences in sparrow bill length are due to adaptation and natural selection. Individuals with the "best" size bill will be most successful in acquiring resources from their environment. Sparrows with 10 mm long bill size will be more successful at crushing seeds and pass the traits on to offspring for similar-sized bills. Those individuals with larger and smaller beak sizes will not be as successful in acquiring resources and will pass on fewer traits for bill size. In order for natural selection to work, there must be a variation of traits. Individuals with the "best" variation to crack seeds will be selected over time because they have adapted to the environment.

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explanation:

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an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.