You Continue Your Analysis By Crossing The Forked And Twist Lines. Your Results Are As Follows:

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You Continue Your Analysis By Crossing The Forked And Twist Lines. Your Results Are As Follows:

Pure Lines: twist x forked F1: (F1xF1) F2:
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The forked mutation and the twist mutation are codominant alleles of the same locus. The absence of wild-type progeny in the F2 of a cross indicates a monohybrid cross: The two lines crossed are mutant in the same locus. Any other explanation that involves two loci (for example, recombination or epistasis) fails because any cross with two loci will produce at least some F2 individuals with a wild-type genotype for both loci and therefore a wild-type phenotype. In this case, the F1 expresses both mutant phenotypes, indicating that the forked and twist alleles are codominant.
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