Essentials of Biology (5th International Edition)
5th Edition
ISBN: 9781259660269
Author: Sylvia S. Mader, Dr., Michael Windelspecht
Publisher: Mcgraw-Hill
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Textbook Question
Chapter 12, Problem 3TC
In a genomic comparison between humans and yeast, what genes would you expect to be similar?
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Question #5:
Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The
genes show independent assortment. Recessive alleles at both loci are required for the facultative
apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C.
At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype.
A facultative apomict male, capable of producing viable pollen, was crossed with a sexually
reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic
ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following
temperatures*:
a) 15°C?
b) 25°C?
*for full credit, show crosses and genotypes where appropriate. Remember to position the
female first (left side) in the cross.
Type your answer here:
a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.
b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
If you wanted to reduce the difference between peak and trough levels that occur with repeated administration of a drug, how would you adjust the dose and dose interval without changing the plateau concentration (plateau is the average of peak and trough levels)? Select your answers for both dose and interval. Hint: It may be helpful to think about this problem using an example such as food. How would you eat if you wanted to maintain very steady hunger/satiety levels without changing your total caloric intake?
Options:
A. Dose; Increase dose
B. Dose; Decrease dose
C. Dose; Do not change dose
D. Interval; Increase the interval between doses (give the drug less frequently)
E. Interval; Decrease the interval between doses (give the drug more frequently)
F. Interval; Do not change the interval
Chapter 12 Solutions
Essentials of Biology (5th International Edition)
Ch. 12.1 - Prob. 1LOCh. 12.1 - Explain the purpose of the polymerase chain...Ch. 12.1 - Prob. 3LOCh. 12.1 - Prob. 4LOCh. 12.1 - Explain the role of the bacterial plasmid in...Ch. 12.1 - Prob. 2CYPCh. 12.1 - Prob. 3CYPCh. 12.1 - Prob. 4CYPCh. 12.1 - Prob. 1ACh. 12.1 - Prob. 2A
Ch. 12.1 - Prob. 3ACh. 12.2 - Prob. 1LOCh. 12.2 - Prob. 2LOCh. 12.2 - Prob. 1CYPCh. 12.2 - Summarize the origins of both embryonic and adult...Ch. 12.2 - Prob. 3CYPCh. 12.2 - Prob. 4ACh. 12.2 - Prob. 5ACh. 12.2 - Prob. 6ACh. 12.3 - Prob. 1LOCh. 12.3 - Prob. 2LOCh. 12.3 - Prob. 1CYPCh. 12.3 - Prob. 2CYPCh. 12.3 - Prob. 3CYPCh. 12.3 - Prob. 7ACh. 12.3 - Prob. 8ACh. 12.4 - Prob. 1LOCh. 12.4 - Prob. 2LOCh. 12.4 - Prob. 3LOCh. 12.4 - Prob. 1CYPCh. 12.4 - Prob. 2CYPCh. 12.4 - Prob. 3CYPCh. 12.4 - Prob. 9ACh. 12.4 - Prob. 10ACh. 12 - Prob. 1BYBCh. 12 - Prob. 2BYBCh. 12 - Prob. 3BYBCh. 12 - Prob. S11.1ABYBCh. 12 - Prob. S11.1BYBCh. 12 - Prob. S3.2BYBCh. 12 - Prob. 1TCCh. 12 - Prob. 2TCCh. 12 - In a genomic comparison between humans and yeast,...
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