In mice, the presence of AA alleles give rise to the agouti fur color, AAY gives rise to a yellow fur color, and AYAY is lethal, causing mice to die before birth. The B allele results in pigment formation and is dominant over the b allele. The bb genotype results in no pigment formation and gives an albino fur color irrespectively of the presence of the AA or AAY alleles.  In the following cross between a yellow and agouti mice, what would be the expected proportion of agouti fur mice among the live offspring?                                                         AAY Bb     X   AA Bb   1/2 1/4 3/8 1/3 3/4

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