Introduction to Genetic Analysis 42

Introduction to Genetic Analysis 42 - 44200_02_p27-72...

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41 2.1 Autosomal inheritance can we ever reject a hypothesis? It has become a general scientifc convention that iF there is a probability oF less than 5 percent oF observing a deviation From expecta- tions at least this large, the hypothesis will be rejected as False. The hypothesis might still be true, but we have to make a decision somewhere and 5 percent is the con- ventional decision line. The implication is that although results this Far From expectations are anticipated 5 per- cent oF the time even when the hypothesis is true, we will mistakenly reject the hypothesis in only 5 percent oF cases and we are willing to take this chance oF error. Let’s look at some real data. We will test our above hypothesis that a plant is a heterozygote. We will let A stand For red petals and a stand For white. Scientists test a hypothesis by making predictions based on the hy- pothesis. In the present situation, one possibility is to predict the results oF a testcross. Assume we testcross the presumed heterozygote. Based on the hypothesis,
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This note was uploaded on 01/10/2011 for the course BIOL BIOL taught by Professor Johnson during the Spring '08 term at Aberystwyth University.

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