LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 9781319145125
Author: Sadava
Publisher: MAC HIGHER
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Chapter 37.1, Problem 1R
Summary Introduction
To review:
The importance of pollen tube in the process of
Introduction:
The pollen grain or the male microgametophyte consists of two cells. One is called tube cell and other one is a generative cell. The tube cell leads to the formation of the pollen tube, which is directly related to the landing of microgametophyte on the stigma of the female reproductive organ, that is, carpel.
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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
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