Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 12, Problem 15Q
Summary Introduction
To determine:
The reason of reduction in healthy immune response in the presence of less diverse gut microbiome.
Concept introduction:
Many bacteria,
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Question #3:
In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would
transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming
there was just one gene conferring gametophytic obligate apomixis, and that the two parents are
inbreds, what would be the consequences of such a cross if:
a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the parental cross.
b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the…
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:
Chapter 12 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 12.1 - Summarize the three lines of host defenses.Ch. 12.1 - Define marker and discuss its importance in the...Ch. 12.1 - Prob. 3AYPCh. 12.1 - Prob. 4AYPCh. 12.1 - Name three kinds of blood cells that function in...Ch. 12.1 - Connect the mononuclear phagocyte system to innate...Ch. 12.1 - Describe how T and B lymphocytes are involved in...Ch. 12.1 - Prob. 8AYPCh. 12.1 - Prob. 1MMCh. 12.1 - Prob. 1NP
Ch. 12.1 - Prob. 2MMCh. 12.2 - Prob. 9AYPCh. 12.2 - Prob. 10AYPCh. 12.2 - Prob. 11AYPCh. 12.2 - Prob. 2NPCh. 12.3 - List the four major categories of nonspecific...Ch. 12.3 - Prob. 13AYPCh. 12.3 - Prob. 14AYPCh. 12.3 - Prob. 15AYPCh. 12.3 - Name four types of antimicrobial host-derived...Ch. 12.3 - Prob. 17AYPCh. 12.3 - Prob. 3NPCh. 12.3 - NCLEX PREX 4. A patient presents to the emergency...Ch. 12.3 - Prob. 5NPCh. 12 - A microorganism carries _____ markers and a B cell...Ch. 12 - Prob. 2QCh. 12 - The pediatrician you work for has just recommended...Ch. 12 - Prob. 4QCh. 12 - In what way is a phagocyte a tiny container of...Ch. 12 - Prob. 6QCh. 12 - Prob. 7QCh. 12 - Prob. 8QCh. 12 - Explain the physiological events that lead to each...Ch. 12 - Prob. 10QCh. 12 - Prob. 11QCh. 12 - Prob. 12QCh. 12 - Prob. 13QCh. 12 - Why do you think that the intestines have one of...Ch. 12 - Prob. 15QCh. 12 - Prob. 16QCh. 12 - Prob. 17QCh. 12 - Prob. 18QCh. 12 - Figure 12.3 demonstrates that lymphatic fluid...Ch. 12 - Prob. 20QCh. 12 - Prob. 21QCh. 12 - Prob. 1VC
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