EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 25, Problem 10TY
Summary Introduction
Introduction: The Pax6 gene is a transcription factor protein-encoding gene that controls the expression of many different genes. This gene is known to coordinate the development of the eye in rats and humans. Any mutation in the gene can cause underdevelopment, leading to small eyes.
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Students have asked these similar questions
Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors
that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas
the brain centers controlling other senses are enlarging. What might be the MOST probable reason for the
loss of vision in these fish?
O
A. exposure to mutagens that caused the loss of vision
B. progressive selection of genetic variants in the population leading to blindness as an
evolutionary adaptation
C. infection by cave-dwelling microorganisms that has led to degeneration of the eyes
O D. extreme high pressure at the ocean depths causing a deterioration of vision
Which statement about Hox genes is false?
a.
They are expressed in similar patterns in the embryos of both mice and flies.
b.
They include a conserved region of base pairs called the homeobox.
c.
They are arranged in similar clusters of genes in both mice and flies.
d.
They are part of the so-called genetic toolkit.
e.
Because of their important functional roles, they evolved rapidly in both mammals and flies.
An organism has a relatively large number of Hox genes in its genome. Which of the following is true
of this organism?
Select one:
А.
Its Hox genes cooperate to bring about sexual maturity at the proper stage of development.
В.
Most of its Hox genes owe their existence to gene fusion events.
С.
The organism must have multiple paired appendages along the length of its body.
D.
These genes are fundamental, and are expressed in all cells of the organism.
E.
The organism has the genetic potential to have a relatively complex anatomy.
Chapter 25 Solutions
EBK BIOLOGY
Ch. 25.1 - Can you think of another example of two different...Ch. 25.1 - Prob. 1BCCh. 25.1 - Is temporal isolation an example of a prezygotic...Ch. 25.1 - Prob. 3CCCh. 25.2 - Prob. 1BCCh. 25.2 - Prob. 1EQCh. 25.2 - Prob. 2EQCh. 25.2 - Prob. 3EQCh. 25.2 - Prob. 1CCCh. 25.2 - Prob. 2CC
Ch. 25.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 25.4 - Prob. 2CCCh. 25.4 - Prob. 1BCCh. 25.4 - Prob. 3CCCh. 25 - Macroevolution refers to evolutionary changes that...Ch. 25 - Prob. 2TYCh. 25 - Prob. 3TYCh. 25 - Prob. 4TYCh. 25 - Prob. 5TYCh. 25 - Prob. 6TYCh. 25 - Prob. 7TYCh. 25 - Prob. 8TYCh. 25 - Prob. 9TYCh. 25 - Prob. 10TYCh. 25 - What is the key difference between prezygotic and...Ch. 25 - What are the key differences between gradualism...Ch. 25 - Prob. 3CQCh. 25 - Prob. 1COQCh. 25 - Discuss the type of speciation (allopatric or...
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