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Principles of Plant Genetics and Breeding

Principles of Plant Genetics and Breeding

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Part A<br />

Please answer the following question true or false:<br />

Outcomes assessment<br />

1 Gamma rays are chemical mutagens.<br />

2 A forward mutation converts a wild type to a mutant phenotype.<br />

3 An acute application <strong>of</strong> a mutagen occurs over a short period <strong>of</strong> time.<br />

4 EMS is a chemical mutagen.<br />

5 Most mutations are recessive.<br />

Part B<br />

Please answer the following questions:<br />

1 Mutations may be spontaneous or …………………………….<br />

2 Mutagens may be chemical or ……………………………..<br />

3 Applications <strong>of</strong> mutagens may be acute or …………………………………<br />

4 Mutations may be forward or ………………………………………<br />

5 Give three examples <strong>of</strong> common mutagens.<br />

Part C<br />

Please write a brief essay on each <strong>of</strong> the following topics:<br />

1 Discuss mutations according to the structural change produced.<br />

2 Discuss the factors that impact the success <strong>of</strong> mutagenesis.<br />

3 Discuss the importance <strong>of</strong> mutation in plant breeding.<br />

MUTAGENESIS IN PLANT BREEDING 213

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