Biology of Plants
8th Edition
ISBN: 9781429219617
Author: Evert, Ray F./
Publisher: Macmillan Higher Education
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Chapter 22, Problem 1CP
Summary Introduction
To determine: The way in which the polarity is important in embryonic development of plants.
Introduction: The process of plant embryogenesis takes place after fertilization of an ovule to produce a completely developed plant embryo. It establishes the apical–basal axis of the plant, with a root apical meristem at one end and a shoot apical meristem at the other end.
Expert Solution & Answer
Explanation of Solution
In biological pattern formation, polarity serves as a key component. The polarity fixes the structural axis of the body to which the lateral appendages will be arranged. Thereby, the establishment of polarity is an important step in the embryonic development of plants.
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19. On the diagram below
a. Label the three pictures as: DNA; polypeptide; or RNA.
b. Label the arrows as: translation or transcription/RNA processing.
c. Add the following details to the diagram.
Promoter region
TATA box
Transcription start site
Transcription terminator
Intron (A,B,C,D)
Exons (1,2,3,4,5)
Splice sites
5' cap
5' UTR (untranslated region)
3' poly A tail
3' UTR (untranslated region)
Translational start (AUG)
Translational stop (UGA, UAG, or UAA)
N and C ends of polypeptide
0000
Match the letter labels in the figure below to the terms. Some letter
labels are not used.
MNNNNNNIN
M
C
B
A
M
D
F
E
H
K
G
8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions.
1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction?
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a) What molecule do you recommend for the trial. Why?
b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?
3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale.
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Mutation 1
Mutation 2
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