Consider two maize plants:a. Genotype C/cm ; Ac/Ac+, where cm is an unstableallele caused by a Ds insertionb. Genotype C/cm, where cm is an unstable allele causedby Ac insertionWhat phenotypes would be produced and in whatproportions when (1) each plant is crossed with a basepair-substitution mutant c/c and (2) the plant in part a iscrossed with the plant in part b? Assume that Ac and care unlinked, that the chromosome-breakage frequencyis negligible, and that mutant c /C is Ac+.

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Chapter11: Genome Alterations: Mutation And Epigenetics
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Consider two maize plants:
a. Genotype C/c
m ; Ac/Ac+, where cm is an unstable
allele caused by a Ds insertion
b. Genotype C/c
m, where cm is an unstable allele caused
by Ac insertion
What phenotypes would be produced and in what
proportions when (1) each plant is crossed with a basepair-substitution mutant c/c and (2) the plant in part a is
crossed with the plant in part b? Assume that Ac and c
are unlinked, that the chromosome-breakage frequency
is negligible, and that mutant c /C is Ac+.

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