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8 / 19  Assuming no gene linkage, in a dihybrid cross of AABB x aabb with AaBb F 1 heterozygotes, what is the ratio of the F 1 gametes ( AB , aB , Ab , ab ) that will give rise to the F 2 offspring?
A  1:1:1:1
B  1:3:3:1
C  1:2:2:1
D  4:3:2:1

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Source:  OpenStax, Biology. OpenStax CNX. Feb 29, 2016 Download for free at http://cnx.org/content/col11448/1.10
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