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To analyze:
Dr. Sophila observed that fruit flies with normal behavior kept at 22°C show abnormal behavior (paralyzed) when moved to 30°C temperature. After returning to 22°C temperature, they again restore their ability to move. The cross between fruit flies with unusual behavior shows 812 progenies, among which 598 are unusual and 214 are normal fruit flies. By using the above information, analyze the unusual behavior of the fruit flies and explain the condition responsible for the change in the behavior of the flies.
Introduction:
The fruit flies in the given question show different phenotypes at different temperatures. The probable cause for this might be the inactivity of the gene at a high temperature which is important for the normal behavior or phenotype. Therefore, an organism showing temperature-sensitive mutation is called a temperature sensitive mutant. Temperature sensitive mutant grown in the permissive condition means the mutated gene product behaves normally at the low temperature and shows altered behavior at high temperature. The temperature at which they show normal behavior is called permissive temperature. A temperature sensitive mutant returns to its normal behavior if placed in permissive temperature.
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Chapter 4 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
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- Participants will be asked to create a meme regarding a topic relevant to the department of Geography, Geomatics, and Environmental Studies. Prompt: Using an online art style of your choice, please make a meme related to the study of Geography, Environment, or Geomatics.arrow_forwardPlekhg5 functions in bottle cell formation, and Shroom3 functions in neural plate closure, yet the phenotype of injecting mRNA of each into the animal pole of a fertilized egg is very similar. What is the phenotype, and why is the phenotype so similar? Is the phenotype going to be that there is a disruption of the formation of the neural tube for both of these because bottle cell formation is necessary for the neural plate to fold in forming the neural tube and Shroom3 is further needed to close the neural plate? So since both Plekhg5 and Shroom3 are used in forming the neural tube, injecting the mRNA will just lead to neural tube deformity?arrow_forwardWhat are some medical issues or health trends that may have a direct link to the idea of keeping fat out of diets?arrow_forward
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