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Chapter 19: Problem 9

How is genetic modification of a crop usually more precise and predictable than using conventional breeding to create a new plant variety?

Short Answer

Expert verified
Genetic modification is more precise because it involves the introduction or modification of specific genes to acquire a particular trait, enabling the elimination or reduction of undesirable traits. It is also more predictable because the desired outcome, such as disease resistance, can be specifically designed and controlled, rather than leaving the trait selection to chance as in conventional breeding.

Step by step solution

01

Understand Genetic Modification and Conventional Breeding

Genetic modification involves specifically altering the genetic makeup of an organism by introducing, eliminating or rearranging specific genes. Conventional breeding, on the other hand, is the process where plants of the same or different species are mated to combine desirable traits from both parents in their offspring.
02

Understanding the Precision of Genetic Modification

Genetic modification is considered more precise because it allows scientists to introduce a specific trait into an organism by inserting or modifying specific genes. Conventional breeding may also introduce undesirable traits along with the desired traits because it involves combining the entire genome of each parent plant.
03

Understanding the Predictability of Genetic Modification

Genetic modification is more predictable because scientists can control which trait is being introduced and can anticipate the outcome. In contrast, conventional breeding involves combining the entire genetic material from each parent, leading to a more unpredictable result because any number of traits can be combined.

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