Answer:
1) AaBbCc, 50% - 2) AAbbCC, 3,125% - 3) AaBbCc is 12,5%.
Explanation:
<u>1º cross</u>.
Parental) AABbCC x aabbcc
Gametes) ABC AbC ABC AbC ABC AbC ABC AbC
abc abc abc abc abc abc abc abc
Punnet Square) <em>Only filled with the progeny genotype AaBbCc</em>.
ABC AbC ABC AbC ABC AbC ABC AbC
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
abc AaBbCc --- AaBbCc --- AaBbCc --- AaBbCc ---
F1 Genotype) 32/64 AaBbCc
32/64 AabbCc (shown as the symbol "---" in the
punnet square)
The probability of producing offspring with genotype AaBbCc is 50%.
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<u>2º cross.</u>
Parental) AABbCc x AaBbCc
Gametes) ABC ABc AbC Abc ABC ABc AbC Abc
ABC ABc AbC Abc aBC aBc abC abc
Punnet Square) Only filled with the progeny genotype AAbbCC.
ABC ABc AbC Abc ABC ABc AbC Abc
ABC --- --- --- --- --- --- --- ---
ABc --- --- --- --- --- --- --- ---
AbC --- --- AAbbCC --- --- --- AAbbCC ---
Abc --- --- --- --- --- --- --- ---
aBC --- --- --- --- --- --- --- ---
aBc --- --- --- --- --- --- --- ---
abC --- --- --- --- --- --- --- ---
abc --- --- --- --- --- --- --- ---
F1 Genotype) 2/64 AAbbCC
The rest of the progeny have different genotypes that are represented with the symbol "---" in the punnet square.
The probability of producing offspring with genotype AAbbCC is 3,125%.
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<u>3º cross.</u>
Parental) AaBbCc x AaBbCc
Gametes) ABC ABc AbC Abc aBC aBc abC abc
ABC ABc AbC Abc aBC aBc abC abc
Punnet Square) Only filled with the progeny genotype AaBbCc.
ABC ABc AbC Abc aBC aBc abC abc
ABC --- --- --- --- --- --- --- AaBbCc
ABc --- --- --- --- --- --- AaBbCc ---
AbC --- --- --- --- --- AaBbCc --- ---
Abc --- --- --- --- AaBbCc --- --- ---
aBC --- --- --- AaBbCc --- --- --- ---
aBc --- --- AaBbCc --- --- --- --- ---
abC --- AaBbCc --- --- --- --- --- ---
abc AaBbCc --- --- --- --- --- --- ---
F1 Genotype) 8/64 AaBbCc
The rest of the progeny have different genotypes that are represented with the symbol "---" in the punnet square.
The probability of producing offspring with genotype AaBbCc is 12,5%.
