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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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oallauddin oallauddin
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12 years ago
how would i write the geno- and phenotypic ratios for a dihybrid cross of TtBb x TtBb?

also, the ratios for TTBb x Ttbb?
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firepainfirepain
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12 years ago
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jordanhimschoot

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12 years ago
This link has a dihybrid cross. Change Rr to Tt and Yy to Bb and you'll have the one you need.
Anything with a capital in for that gene shows the dominant trait, whereas a lowercase shows the recessive.
TTBbxTtbb is a little harder to do, but only has four results:
TTBb x4
TtBb x4
TTbb x4
Ttbb x4
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Educator
12 years ago
Marking this solved.
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