4.
if the offspring of a dihybrid cross have a 9: 3: 3: 1 phenotypic ratio, what must be true of the parents’ genotypes?
both parents are heterozygous for only one trait.
both parents express the dominant trait.
both parents express the recessive trait.
both parents are heterozygous for both traits.
Answers: 2
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What factors contribute to the effect an environmental toxin has on the human body?
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Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to
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4.
if the offspring of a dihybrid cross have a 9: 3: 3: 1 phenotypic ratio, what must be true...
if the offspring of a dihybrid cross have a 9: 3: 3: 1 phenotypic ratio, what must be true...
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