Biological Science (6th Edition)
Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 11, Problem 16PIAT

PROCESS OF SCIENCE Sex is dangerous in yeast—when cells are exposed to the pheromone of the opposite mating type, 10–15 percent of them die. For two yeast cells to fuse, portions of their cell walls must be broken down. How could you test the hypothesis that cell-wall destruction is responsible for pheromone-induced cell death in yeast?

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I need help with a biology question: If gametes have 10 chromosomes, the cell resulting from fertilization will have __________ chromosomes. 20,10,40 or 5 ?
SCIENCE, TECHNOLOGY, AND SOCIETY Trace amounts ofdioxin were present in Agent Orange, a defoliant sprayed onvegetation during the Vietnam War. Animal tests suggest thatdioxin can cause birth defects, cancer, liver and thymus damage,and immune system suppression, sometimes leading to death.But the animal tests are equivocal; a hamster is not affectedby a dose that can kill a guinea pig. Dioxin acts like a steroidhormone, entering a cell and binding to a cytoplasmic receptorthat then binds the cell’s DNA.(a) Discuss how this mechanism might help explain the variety of dioxin’s effects on different body systems and indifferent animals.(b) Discuss how you might determine whether a type of illnessis related to dioxin exposure. Next, discuss how you mightdetermine whether a particular individual became ill as aresult of exposure to dioxin. Which would be more difficultto demonstrate? Why?
Genetics knowledge 9. A certain species of desert rat is a sexually-reproducing, diploid animal. It has a genome (N) consisting of 22 different types of chromosomes.  Stages of gametogenesis in these mammals are similar to humans. Answer the following question in the image
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