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What is the main meaning of the 9:3:3:1 result in a dihybrid cross?

Answer and explanation

Correct answer: Forms of two traits assort independently and produce new combinations

The 9:3:3:1 ratio is the typical phenotypic outcome of a dihybrid cross between two individuals heterozygous for two independently assorting traits, such as AaBb × AaBb. The four phenotype classes occur in the proportions 9, 3, 3 and 1 because allele pairs separate and recombine independently. Thus option A is correct; the other choices deny the presence of two inherited traits or invoke an unrelated idea.

Related tags

Dihybrid-RatioIndependent-AssortmentInheritanceHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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