Discussion 1 Spring 2009

Discussion 1 Spring 2009 - GENETICS (BIO 325) Spring 2009...

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GENETICS (BIO 325) Spring 2009 Discussion 1 _____________________________________________________________ 1. Which of the following are examples of monohybrid crosses? (a) A/a x a/a (b) A/a x A/a (c) A/a; B/b x a/a;b/b (d) A/a; B/b x A/a; B/b (e) A/a; B/B x A/a; B/B 2. Yellow leaves on a plant can be caused by genetic mutations, infection by viruses, or unfavorable environmental conditions. Suppose you find a plant that has yellow leaves and want to determine if the cause of the phenotype is a genetic mutation or an environmental stress. Design an experiment to differentiate between these different possibilities. 3. Suppose that red flower color (R/R or R/r) is dominant to white flower color (r/r) in Petunia. A friend has a petunia plant with red flowers and wants to determine whether the plant is R/R or R/r. In order to determine the genotype, you cross it with a white-flowered petunia. (a) What is the name of the cross that you performed? (b)
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Discussion 1 Spring 2009 - GENETICS (BIO 325) Spring 2009...

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