EP CONNECT ONLINE ACCESS FOR BIOLOGY
20th Edition
ISBN: 9781260494655
Author: Raven
Publisher: MCG COURSE
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Chapter 52, Problem 2A
In the Spemann experiment, when the dorsal lip is transplanted, the recipient embryo then has a second source of molecules that
a. specifies ventral fate.
b. inhibits the molecules that specify ventral fate.
c. specifies dorsal fate.
d. inhibits the molecules that specify dorsal fate.
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Signal transduction pathways are important mechanisms for cell-to-cell communication in multicellular organisms. How do the target cells typically respond when they receive signals from neighboring cells during very early stages of embryo development?
A. The target cells move to one of the poles to establish the anterior-posterior body axis.
B. The target cells undergo changes in gene expression, sending them down a specific developmental path.
C. The target cells stop dividing so the neighboring cells have time to get to the same stage of development.
D. The target cells activate a collection of miRNAs to accelerate transcription and cell division.
Which of the following statements about iPS cells is correct?
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B. Transcription factors play a key role in their production.
C. When implanted into a mouse blastocyst, they are not able to produce viable offspring.
D. They have never been used in a human clinical trial.
Based on the information scientists and doctors have been able to collect, compare embryonic stem cells to induced pluripotent stem cells (iPSCs), then choose which statement below correctly describes these two types of stem cells.
a. They are equivalent.
b. iPSCs have more potency than embryonic stem cells.
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Chapter 52 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY
Ch. 52.1 - Describe the events involved in fertilization.Ch. 52.1 - Prob. 2LOCh. 52.2 - Prob. 1LOCh. 52.2 - Prob. 2LOCh. 52.2 - Prob. 3LOCh. 52.3 - Prob. 1LOCh. 52.3 - Compare gastrulation in different animals.Ch. 52.3 - Name the extraembryonic membranes in amniotes.Ch. 52.4 - Prob. 1LOCh. 52.4 - Prob. 2LO
Ch. 52.4 - Prob. 3LOCh. 52.5 - Prob. 1LOCh. 52.5 - Explain the function of the organizer.Ch. 52.5 - Distinguish between primary and secondary...Ch. 52.6 - Describe the major developmental events in the...Ch. 52.6 - Explain the role of the placenta.Ch. 52.6 - Prob. 3LOCh. 52 - Data analysis Two different genes have mutant...Ch. 52 - Prob. 1IQCh. 52 - Prob. 1UCh. 52 - Which of the following plays the greatest role in...Ch. 52 - Gastrulation is a critical event during...Ch. 52 - Gastrulation in a mammal would be most similar to...Ch. 52 - Prob. 5UCh. 52 - Of the following processes, which occurs last? a....Ch. 52 - Which of the following would qualify as a...Ch. 52 - Prob. 1ACh. 52 - In the Spemann experiment, when the dorsal lip is...Ch. 52 - Suppose that a burst of electromagnetic radiation...Ch. 52 - Prob. 4ACh. 52 - Drug or alcohol exposure during which of the...Ch. 52 - Axis formation in amniotic embryos could be...Ch. 52 - Prob. 1SCh. 52 - You look up from your studying to see your dog,...Ch. 52 - Why doesnt a woman menstruate while she is...Ch. 52 - Spemann and Mangold were able to demonstrate that...
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