A geneticist developed a new type of pest-resistant walnut tree. These walnut trees 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, she will get:
A)exactly 70 resistant trees.
B)somewhere between 67 and 73 resistant trees.
C)somewhere between 64 and 73 resistant trees.
D)The answer cannot be determined.

Question

Quizplus · Accepted Answer

Given the genetic probability of 75% for resistant trees, the actual number of resistant trees from 100 offspring can vary due to natural variation and is not precisely predictable.

A Geneticist Developed a New Type of Pest-Resistant Walnut Tree