Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 12.4, Problem 1R
Summary Introduction
To review:
Genetic linkage and its effects in genetic crosses.
Introduction:
The genes present close to each other on a chromosome can become physically linked. This is known as genetic linkage. This phenomenon was first discovered by Thomas Hunt Morgan in the fruit fly Drosophila melanogaster.
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Explain the Limitations of two-point crosses
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Life: The Science of Biology
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- Apply the product rule and sum rule appropriately when predicting the outcomes of genetic crosses.arrow_forwardExplain what nondisjunction is, and give two examples of phenotypes that can result from it.arrow_forwardIdentify how many genes are associated with the types of crosses: A.) Monohybrid B.) Dihybridarrow_forward
- Explain the difference between crossing over and reciprocal translocation. Give an example of a possible decease caused by reciprocal translocation.arrow_forwardExplain how linkage affects the outcome of crosses?arrow_forwardWrite the genotypes of all recombinant and nonrecombinant progeny expected from the following three-point cross: m+ pt starrow_forward
- In making genetic crosses, why is it important to identify the gametes that each individual can contribute?arrow_forwardList the possible genotypes of the parents if a cross resulted in a F1-generation consisting of 50% white colonies and 50% red colonies:arrow_forwardHow can the product rule be used to predict the results of crosses in which multiple genes are studied simultaneously?arrow_forward
- what is a test cross?Is AA x aa,Aa x aa, Aa x AA , Aa x Aa all considered as a test cross??arrow_forwardUnder what circumstance might two loci be on the same chromosome but behave as if independently assorting in crosses?arrow_forwardHow linkage and crossing over is inter-related explain in detail giving suitable examples?arrow_forward
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