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Genetics: Analysis and Principles 5th Edition by Robert Brooker
Edition 5ISBN: 978-0073525341Genetics: Analysis and Principles 5th Edition by Robert Brooker
Edition 5ISBN: 978-0073525341 Exercise 29
A hypothetical cell lineage is shown here. 
a.
A gene, which we will call gene X, is activated in the B-1 cell, so the B-1 cell will progress through the proper developmental stages to produce three nerve cells (D-1, D-2, and D-3) and one muscle cell (D-4). Gene X is normally inactivated in A-1, C-1, and C-2 cells, as well as the four D cells. Draw the expected cell lineages if a heterochronic mutation had the following effects:
a. Gene X is turned on one cell division too early
b. Gene X is turned on one cell division too late.
a.
A gene, which we will call gene X, is activated in the B-1 cell, so the B-1 cell will progress through the proper developmental stages to produce three nerve cells (D-1, D-2, and D-3) and one muscle cell (D-4). Gene X is normally inactivated in A-1, C-1, and C-2 cells, as well as the four D cells. Draw the expected cell lineages if a heterochronic mutation had the following effects:
a. Gene X is turned on one cell division too early
b. Gene X is turned on one cell division too late.
Explanation
Verified
Verified
(a) When gene X is turned on, one cell d...
Genetics: Analysis and Principles 5th Edition by Robert Brooker
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