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30-01-2020
Biology

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Some trolls have one eye (EE, Ee) while others have two (ee). Two heterozygous one-eyed trolls are crossed. What is the expected phenotype ratio?

Respuesta :

05-02-2020

Answer:

75% one eye, 25% two eyes (or 3:1 one eye: two eye)

Explanation:

The cross between the two trolls are shown in the attached punnett square

Ee x Ee gives 3 genotypes: EE, Ee, and ee

at a ratio of :1 EE: 2 Ee: 1 ee

Ee and EE are both one eye genotypes, so the phenotype is 3:1 one eye to two eye.

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