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Which of the following provides an example of epistasis? A) Recessive genotypes for each of two genes (aabb) results in an albino corn snake. B) The allele b17 produces a dominant phenotype, although b1 through b16 do not. C) In rabbits and many other mammals, one genotype (cc) prevents any fur color from developing. D) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes. E) In cacti, there are several genes for the type of spines.

Ross Pratt

in Biology

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Zach Chandler on December 17, 2018

D) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes. Epistasis is the communication and interaction of genes. These are not within the alleles, but the genes themselves only. Also known as the genetic background, the genes are dependent for their effect to show the trait.


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