Prescott's Microbiology
11th Edition
ISBN: 9781260409062
Author: WILLEY, Joanne
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 38.3, Problem 2CC
Summary Introduction
To determine: The reason for recurrent cold sores in people.
Introduction: Cold sore or a fever blister is a fluid-filled lesion that is commonly formed at the lips or the inside of nostrils. Cold sores present themselves near the nerve endings. As a result, they cause significant itching and burning sensation.
Summary Introduction
To determine: The causative agents of cold sores.
Introduction: Viruses consists of
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Three of the many recessive mutations in Drosophila melanogaster that affect body color, wing shape, or bristle morphology are black (b) body versus grey in wild type, dumpy (dp), obliquely truncated wings versus long wings in the male, and hooked (hk) bristles versus not hooked in the wild type. From a cross of a dumpy female with a black and hooked male, all of the F1 were wild type for all three of the characters. The testcross of an F1 female with a dumpy, black, hooked male gave the following results:
Trait
Number of individuals
Wild type
169
Black
19
Black, hooked
301
Dumpy, hooked
21
Hooked, dumpy, black
172
Dumpy, black
6
Dumpy
305
Hooked
8
Determine the order of the genes and the mapping distance between genes.
Determine the coefficient of confidence for the portion of the chromosome involved in the cross. How much interference takes place in the cross?
What happens to a microbes membrane at colder temperature?
Genes at loci f, m, and w are linked, but their order is unknown. The F1 heterozygotes from a cross of FFMMWW x ffmmww are test crossed. The most frequent phenotypes in the test cross progeny will be FMW and fmw regardless of what the gene order turns out to be.
What classes of testcross progeny (phenotypes) would be least frequent if locus m is in the middle?
What classes would be least frequent if locus f is in the middle?
What classes would be least frequent if locus w is in the middle?
Chapter 38 Solutions
Prescott's Microbiology
Ch. 38.1 - Prob. 1MICh. 38.1 - Why is it thought that the characteristic rash is...Ch. 38.1 - Prob. 3MICh. 38.1 - Prob. 1CCCh. 38.1 - Prob. 2CCCh. 38.1 - Prob. 3CCCh. 38.1 - Prob. 4CCCh. 38.1 - Prob. 5CCCh. 38.1 - Prob. 6CCCh. 38.1 - Prob. 7CC
Ch. 38.3 - Prob. 1MICh. 38.3 - Prob. 2MICh. 38.3 - Prob. 1CCCh. 38.3 - Prob. 2CCCh. 38.3 - Prob. 3CCCh. 38.3 - Prob. 4CCCh. 38.3 - Prob. 5CCCh. 38.3 - Prob. 6CCCh. 38.4 - Prob. 1CCCh. 38.4 - Prob. 2CCCh. 38.4 - Prob. 3CCCh. 38.4 - Prob. 4CCCh. 38.5 - Prob. 1MICh. 38.5 - Prob. 1CCCh. 38.5 - Prob. 2CCCh. 38.5 - Prob. 3CCCh. 38.6 - How are prions different from viruses? How are...Ch. 38.6 - In what way are spongiform encephalopathies...Ch. 38 - Prob. 1RCCh. 38 - Prob. 2RCCh. 38 - Prob. 3RCCh. 38 - Prob. 1ALCh. 38 - Prob. 2ALCh. 38 - Prob. 3ALCh. 38 - Prob. 4ALCh. 38 - Prob. 5ALCh. 38 - Prob. 6AL
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