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Mutation studies at the A. locus in maize. I. A mutable allele controlled by Dt

Mutation studies at the A. locus in maize. I. A mutable allele controlled by Dt

Genetics 46: 625-640

ISSN/ISBN: 0016-6731

PMID: 13729872

A mutable allele of the A1 locus in maize has been found to mutate to several new types of alleles. In the presence of the unlinked mutator factor Dt, it mutates at all stages of plant development giving a high total mutation rate but a moderate rate when measured on a cell generation basis. The mutational behavior of this allele (am-l) was quite different from the previously reported Dt-responding alleles and from other genes which have had extensive mutation trials. The differences observed may be interpreted to indicate that previous studies of spontaneous mutation have dealt with phenomena which are peculiar to and possibly the result of the meiotic process. The comparisons made suggest that the a-Dt system and other similar mutator systems may provide a large portion of the genetic variability found in corn.

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Accession: 014112733

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