MCAT Question of the Day
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    Q:

    		 Given a certain species of flower, the color is determined by a gene with two alleles: the dominant allele (R) yields red flower color and the recessive allele (r) yields pink flower color. Another independently assorting gene determines the expression of flower color: the dominant allele (E) is needed for expressing color, and ee results in no color (white). In an experimental cross between a red and a pink plant, the resulting progeny is the following: 3/8 red; 3/8 pink; 1/4 white. Which of the answer choices below correctly describe the genotypes of the plants crossed? Note: because the cross was between a red and pink plant, this assumes color expression, meaning the red and pink plants are NOT ee.
    		 

    A

    		 RREE x RrEe

    B

    		 Rree x RrEe

    C

    		 rrEe x RrEE

    D

    		 RrEe x rrEe



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