LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 9781319145125
Author: Sadava
Publisher: MAC HIGHER
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Chapter 15.2, Problem 2R
Summary Introduction
To review:
The reason due to which all women containing mutation in the BRCA (breast cancer) gene do not get the early onset of breast cancer.
Introduction:
BRCA gene is known as tumor suppressor gene that produces a protein used in deoxyribonucleic acid (DNA) repair to maintain stability of the cell. There are two types of BRCA gene, which are found in the human body, that are BRCA 2 and BRCA 1. The gene for BRCA 1 is positioned on the q arm (short arm) of the 17th chromosome at 21 positions and the gene for BRCA 2 is positioned on the q arm of the 13th chromosome at 12.3 positions.
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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 15 Solutions
LIFE: THE SCIENCE OF BIOLOGY
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