In wheat, kernel color is determined by additive alleles at two unlinked loci. If two plants, one with dark red kernels (+++– genotype), and one with light red kernels (+– – – genotype), are crossed, what fraction of the offspring is expected to have phenotypes distinct from parental colors?

50 %

Explanation:

Alleles in dark red kernels:  ++ and +-

Alleles in light red kernels:  +- and --

genetic cross will result in off springs: +++- ; ++--, +-++,  +-+-

Hence 50% offspring will have phenotypes different from parental colors

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explanation:

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