What Is Genetic Engineering?
Big Idea
Definition
Genetic engineering is the deliberate modification of an organism's DNA. DNA is the molecule that carries genetic instructions, and changing it can alter how a cell works, what a plant grows like, or whether a microbe makes a useful substance.
Why It Matters
Genetic engineering can help scientists learn how genes work, create medicines, improve crops, and design organisms that solve practical problems.
First Principles
At the most basic level, life uses DNA as an instruction manual. A gene is a section of DNA that helps produce a functional product, often a protein. If you change the instructions, you can sometimes change the result.
Core Terms
What is genetic engineering?
Genetic engineering means deliberately changing DNA to affect how an organism functions.
Correct answer: Deliberately changing DNA
Which molecule stores genetic instructions?
DNA stores the hereditary instructions used by living organisms.
Correct answer: DNA
In one sentence, what is a gene?
A simple beginner definition is that a gene is a stretch of DNA that helps produce a product or perform a job.
Correct answer: A gene is a segment of DNA with a function.
Preview of the Course
In this course, you will learn what DNA is, how genes work, how scientists edit DNA, how engineered microbes and crops are made, and why ethics and safety matter.