Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 1RQ
What is meant by epigenesis? How did Kaspar Friedrich Wolff’s concept of epigenesis differ from the early notion of preformation?
Expert Solution
Summary Introduction
To define: Epigenesis.
Introduction: Epigenesis is a concept developed by German embryologist Kaspar Friedrich Wolff in 1759. It is an idea stating that the fertilized egg consists only of the building material, which gets assembled and forms the embryo’s body.
Explanation of Solution
Epigenesis states that the undifferentiated material present in the embryo will form its body. It states that undifferentiated granular material arranged in layers continues to become thinner in certain areas, to thicker in others, to segment, and to fold until the appearance of embryo’s body.
Expert Solution
Summary Introduction
To explain: The way in which the Kaspar Friedrich Wolff’s epigenesis concept differs from preformation.
Explanation of Solution
The Kaspar Friedrich Wolff’s epigenesis states that the undifferentiated material present in the embryo will form its body. But the concept of preformation is an early belief stating that the complete body of an individual was preformed in an egg or sperm cell.
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8. Transcription and Translation Practice: (Video 10-1 and 10-2)
A. Below is the sense strand of a DNA gene. Using the sense strand, create the antisense
DNA strand and label the 5' and 3' ends.
B. Use the antisense strand that you create in part A as a template to create the mRNA
transcript of the gene and label the 5' and 3' ends.
C. Translate the mRNA you produced in part B into the polypeptide sequence making sure
to follow all the rules of translation.
5'-AGCATGACTAATAGTTGTTGAGCTGTC-3' (sense strand)
4
What is the structure and function of Eukaryotic cells, including their organelles? How are Eukaryotic cells different than Prokaryotic cells, in terms of evolution which form of the cell might have came first? How do Eukaryotic cells become malignant (cancerous)?
What are the roles of DNA and proteins inside of the cell? What are the building blocks or molecular components of the DNA and proteins? How are proteins produced within the cell? What connection is there between DNA, proteins, and the cell cycle? What is the relationship between DNA, proteins, and Cancer?
Chapter 8 Solutions
Loose Leaf For Integrated Principles Of Zoology
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