PRIN. OF LIFE (LOOSELEAF) W/LAUNCHPAD
3rd Edition
ISBN: 9781319465377
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 20.2, Problem 1LO
Summary Introduction
To explain: One or more key innovations or adaptations in land plants that were found most essential for their survival in the terrestrial environment and to justify them.
Introduction: The land plants first appeared between 500 and 450 million years ago in the terrestrial environment. Evolution among plants facilitated their survival on land, and it includes numerous adaptions such as the cuticles, protected embryo, gametangia, thick spore walls, stomata, mutualistic association, and protective pigments.
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Please answer q3
Respond to the following in a minimum of 175 words:
How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients?
What are some potential ethical issues associated with using this technology?
Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.
You are studying the effect of directional selection on body height in three
populations (graphs a, b, and c below).
(a) What is the selection differential? Show your calculation. (2 pts)
(b) Which population has the highest narrow sense heritability for height?
Explain your answer. (2 pts)
(c) If you examined the offspring in the next generation in each population,
which population would have the highest mean height? Why? (2 pts)
(a)
Midoffspring height (average height of offspring)
Short
Short
Short
Short
(c)
Short
(b)
Short
Tall
Short
Tall
Short
Short
Tall
Midparent height
(average height of
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Chapter 20 Solutions
PRIN. OF LIFE (LOOSELEAF) W/LAUNCHPAD
Ch. 20.1 - Prob. 1LOCh. 20.1 - Prob. 2LOCh. 20.1 - Prob. 1FQCh. 20.1 - Prob. 1RACh. 20.1 - Prob. 2RACh. 20.1 - Prob. 3RACh. 20.1 - Prob. 4RACh. 20.2 - Prob. 1LOCh. 20.2 - Prob. 2LOCh. 20.2 - Prob. 1FQ
Ch. 20.2 - Prob. 1RACh. 20.2 - Prob. 2RACh. 20.3 - Prob. 1LOCh. 20.3 - Prob. 2LOCh. 20.3 - Prob. 3LOCh. 20.3 - Prob. 1RACh. 20.3 - Prob. 2RACh. 20.3 - Prob. 3RACh. 20.4 - Prob. 1LOCh. 20.4 - Prob. 2LOCh. 20.4 - Prob. 3LOCh. 20.4 - Prob. 1FQCh. 20.4 - Prob. 1ICh. 20.4 - Prob. 2ICh. 20.4 - Prob. 3ICh. 20.4 - Prob. 1RACh. 20.4 - Prob. 2RACh. 20.4 - Prob. 3RACh. 20.4 - Prob. 4RACh. 20.4 - Prob. 5RACh. 20.5 - Prob. 1LOCh. 20.5 - Prob. 2LOCh. 20.5 - Prob. 3LOCh. 20.5 - Prob. 4LOCh. 20.5 - Prob. 1TKCh. 20.5 - Prob. 2TKCh. 20.5 - Prob. 3TKCh. 20.5 - Prob. 4TKCh. 20.5 - Prob. 1FQCh. 20.5 - Prob. 1RACh. 20.5 - Prob. 2RACh. 20.5 - Prob. 3RACh. 20.5 - Prob. 4RACh. 20.5 - Prob. 5RACh. 20.5 - Prob. 6RACh. 20 - Prob. 1.1QCh. 20 - Prob. 1.2QCh. 20 - Prob. 2.1QCh. 20 - Prob. 2.2QCh. 20 - Prob. 2.3QCh. 20 - Prob. 3.1QCh. 20 - Prob. 3.2QCh. 20 - Prob. 3.3QCh. 20 - Prob. 4.1QCh. 20 - Prob. 4.2QCh. 20 - Prob. 5.1QCh. 20 - Prob. 5.2Q
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