Imagine a large source popul ation of 500 flies at a particular time that we will call t0 . the flies have brown or ebony bodies. based on the information given above, how many total alleles for body color exist in the population?

As the population is possessing two phenotypes of the body color, it must then have at least two alleles for the gene of body color. As diploid (2n), each fly exhibits two alleles of the gene for the body color, one allele inherited from the father and one from the mother.  

Therefore, a total number of alleles of the gene for the color of the body in the population is:  

2 × population size, here 2 indicates each fly has two alleles of the gene, that is, 2 × 500 = 1000.  

Hence, the total number of alleles of the stated gene in the population is 1000.  

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