Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 29, Problem 38CTQ
How did the evolution of jaw musculature allow mammals to spread?
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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 29 Solutions
Biology 2e
Ch. 29 - Figure 29.3 Which of the following statements...Ch. 29 - Figure 29.22 Which of the following statements...Ch. 29 - Figure 29.24 Members of the order Testudines have...Ch. 29 - Which of the following is not contained in phylum...Ch. 29 - Which group of invertebrates is most closely...Ch. 29 - Hagfish. lam preys. sharks, and tuna are all...Ch. 29 - Members of Chondrichthyes differ from members of...Ch. 29 - Members of Chondrichfhyes are thought to be...Ch. 29 - A marine biologist catches a species of fish she...Ch. 29 - Which of the following is not true of...
Ch. 29 - Frogs belong to which order? Anura Urodela Caudata...Ch. 29 - During the Mesozoic period, diapsids diverged...Ch. 29 - Squamata includes. crocodiles and alligators...Ch. 29 - Which of the following reptile groups gave rise to...Ch. 29 - A bird or feathered dinosaur is. Neornithes...Ch. 29 - Which of the following feather types helps to...Ch. 29 - Eccrine glands produce sweat lipids scents milkCh. 29 - Monotremes include: kangaroos koalas bandicoots...Ch. 29 - The evolution of which of the following features...Ch. 29 - Which of the following is not an anthropoid?...Ch. 29 - Which of the following is part of a clade believed...Ch. 29 - Which of the following human traits is not a...Ch. 29 - What are the characteristic features of the...Ch. 29 - What is the structural advantage of the notochord...Ch. 29 - What can be inferred about the evolution of the...Ch. 29 - Why did gnathostomes replace most agnathans?Ch. 29 - Explain why frogs are restricted to a moist...Ch. 29 - Describe the differences between the larval and...Ch. 29 - Describe how metamorphosis changes the structures...Ch. 29 - Describe the functions of the three extraembryonic...Ch. 29 - What characteristics differentiate lizards and...Ch. 29 - Based on how reptiles therm oregulate, which...Ch. 29 - Explain why birds are thought to have evolved from...Ch. 29 - Describe three skeletal adaptations that allow for...Ch. 29 - How would the chest structure differ between...Ch. 29 - Describe three unique features of the mammalian...Ch. 29 - Describe three characteristics of the mammalian...Ch. 29 - How did the evolution of jaw musculature allow...Ch. 29 - How did archaic Homo sapiens differ from...Ch. 29 - Why is it so difficult to determine the sequence...
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