A Geneticist Developed a New Type of Pest-Resistant Walnuts

question 37

Multiple Choice

A geneticist developed a new type of pest-resistant walnuts. These walnuts produce 75% of pest-resistant walnut trees and 25% of susceptible (not resistant) trees when two resistant trees are crossed. If a grower crossed 100 such pairs of trees for 100 offspring and did this many times over many years and plots, she should get:

• A)approximately 70% of resistant trees over all plots and years.
• B)exactly 70% of resistant trees over all plots and years.
• C)exactly 70% of resistant trees in all plots and years.
• D)None of the answer options is correct.

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