Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 21, Problem 2SQ
The __________ of diplomonads and parabasalids produce ATP by an anaerobic pathway.
- a. trypanosomes
- b. hydrogenosomes
- c. microvilli
- d. flagella
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In a natural population of outbreeding plants, the variance of the total number
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the laboratory and developed into separate true-breeding lines by self-
fertilization-with selection for high, low, or medium number of seeds-for 10
generations. The average variance in the tenth generation in each of the 20 sets
is about equal and averages 5.8 across all the sets. Estimate the broad-sense
heritability for seed number in this population. (4 pts)
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Question 1
In a population of Jackalopes (pictured below), horn length will vary between
0.5 and 2 feet, with the mean length somewhere around 1.05 feet. You pick
Jackalopes that have horn lengths around 1.75 feet to breed as this appears to
be the optimal length for battling other Jackalopes for food. After a round of
breeding, you measure the offsprings' mean horn length is 1.67. What is the
heritability of horns length (h2)? Is Jackalope horn length a heritable trait? (4
pts)?
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Frequency of
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Question 2
The graph below shows results of two simulations, both depicting the rise in
frequency of beneficial allele in a population of infinite size. The selection
coefficient and the starting frequency are the same, but in one simulation the
beneficial allele is dominant and in the other it is recessive. Neither allele is
fixed by 500 generations.
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(a) Which simulation shows results for a dominant and which shows results for a
recessive allele? How can you tell? (4 pts)
(b) Neither of the alleles reaches fixation by 500 generations. If given enough
time, will both of these alleles reach fixation in the population? Why or why
not? (3 pts)
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Chapter 21 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 21 - Multicelled haploid and diploid bodies form in...Ch. 21 - The __________ of diplomonads and parabasalids...Ch. 21 - Radiolaria and diatoms have a shell of _______. a....Ch. 21 - Prob. 4SQCh. 21 - Prob. 1DAACh. 21 - Prob. 2DAACh. 21 - Prob. 3DAACh. 21 - Prob. 4DAACh. 21 - Diatoms produce _______ that help(s) them float....Ch. 21 - Prob. 6SQ
Ch. 21 - Green algae are most closely related to _____. a....Ch. 21 - Prob. 8SQCh. 21 - Which species does not cause human disease? a....Ch. 21 - _____ is produced from red algae. a. Diatomaceous...Ch. 21 - Prob. 11SQCh. 21 - Prob. 12SQCh. 21 - Prob. 13SQCh. 21 - Prob. 14SQCh. 21 - Match each term with its most suitable...Ch. 21 - Which groups or protists would you be most likely...Ch. 21 - Prob. 2CTCh. 21 - Prob. 3CT
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