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PRINCIPLES OF LIFE
3rd Edition
ISBN: 9781319017712
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 21.3, Problem 3RA
Summary Introduction
To find: The feature of chytrids that suggests that they had an aquatic ancestor.
Introduction: Chytrids are simple, aquatic, microscopic
Expert Solution & Answer
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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?
Chapter 21 Solutions
PRINCIPLES OF LIFE
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.1 - Prob. 1RACh. 21.1 - Prob. 2RACh. 21.2 - Prob. 1LOCh. 21.2 - Prob. 2LOCh. 21.2 - Prob. 3LOCh. 21.2 - Prob. 1RACh. 21.2 - Prob. 2RACh. 21.2 - Prob. 3RA
Ch. 21.3 - Prob. 1LOCh. 21.3 - Prob. 2LOCh. 21.3 - Prob. 3LOCh. 21.3 - Prob. 1FQCh. 21.3 - Prob. 1TKCh. 21.3 - Prob. 2TKCh. 21.3 - Prob. 3TKCh. 21.3 - Prob. 2FQCh. 21.3 - Prob. 1RACh. 21.3 - Prob. 2RACh. 21.3 - Prob. 3RACh. 21.3 - Prob. 4RACh. 21.3 - Prob. 5RACh. 21.4 - Prob. 1LOCh. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.4 - Prob. 1ICh. 21.4 - Prob. 2ICh. 21.4 - Prob. 1RACh. 21.4 - Prob. 2RACh. 21.4 - Prob. 3RACh. 21.4 - Prob. 4RACh. 21 - Prob. 1.1QCh. 21 - Prob. 1.2QCh. 21 - Prob. 2.1QCh. 21 - Prob. 2.2QCh. 21 - Prob. 3.1QCh. 21 - Prob. 3.2QCh. 21 - Prob. 4.1QCh. 21 - Prob. 4.2Q
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