
Concept explainers
a.
To determine: The percentage of seeds that are expected to grow if the two genes are unlinked.
Introduction: Antibiotic-resistant bacteria occur when an antibiotic fails to kill the bacteria. The bacteria become resistant to that particular drug. As the bacteria become resistant, the illness becomes more severe, and the risk of complications and death increases.
b.
To determine: The presence of linkage if only 13% of the seeds grew in the medium and the map units between loci.
Introduction: Drug resistance can be described as the reduction in the effectiveness of a certain drug in ceasing the growth or killing the organism (pathogen), which was once successful in doing so. When a pathogen develops the ability to resist more than one drug, it is called “multi-drug resistance.”
c.
To determine: The proportion of the seeds that will grow on medium containing hygromycin and herbicide if the F1 progeny is test crossed.
Introduction: Horizontal gene transfer can be defined as the exchange of genetic contents between the unicellular and multi-cellular organisms that do not include the transmission of DNA from parent to offspring. This process is responsible for evolution by mixing the genetic material of two species.

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Chapter 4 Solutions
Introduction to Genetic Analysis
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