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**THE MONOHYBRID CROSS THE DIHYBRID CROSS**

GENETIC CROSSES THE MONOHYBRID CROSS THE DIHYBRID CROSS

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**First: Set up the Parental Cross P 1**

A = axial flowers Male a = terminal flowers Female AA X aa

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**SET UP THE PUNNETT SQUARE**

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**Put the Alleles in Separate Boxes**

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A Monohybrid Cross

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**Now Perform an F1 Cross A = axial flowers Male**

a = terminal flowers Female F1 = First Offspring Aa X Aa

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**Put the Alleles in Separate Boxes**

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Perform the Cross

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**Assess The Genotype and Phenotypes**

GENOTYPES AA 1 Aa 2 aa 1 Ratio 1:2:1 PHENOTYPES Axial Flowers (AA, Aa) 3 Terminal Flowers (aa) 1 Ratio 3:1

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**Assess The Genotype and Phenotypes**

Axial Flowers 3 Terminal Flowers 1 Ratio 3:1 GENOTYPES AA 1 Aa 2 aa 1 Ratio 1:2:1

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**First: Set up the Parental Cross P 1**

. F =flying f = walking P = purple p = orange FFPP X ffpp MALE FEMALE

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**PARENTAL P1 DIHYBRID CROSS**

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**PARENTAL P1 DIHYBRID CROSS**

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. F =flying f = walking P = purple p = orange Do the F1 cross FfPp X FfPp Be sure you choose one of EACH type of allele

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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F2 DIHYBRID CROSS

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