Introducing KNOVA — A free reading app with curriculum-aligned passages on History & Science for Grades 3-8Learn More →

Genetic Technology and Biotechnology — Reading Comprehension

No ratings yet

Premium Resource

Grades

Standards

MS-LS3-1

Rate this resource

Send Feedback / Report an Issue

About This Reader

This comprehensive middle school science passage introduces students to the world of genetic technology and biotechnology, aligning with NGSS standard MS-LS3-1. Students will learn how scientists use DNA fingerprinting for forensics and paternity testing, genetic testing to screen for inherited diseases, and gene therapy to replace faulty genes. The passage also explains the processes behind genetic engineering of GMOs, the method of cloning, and the revolutionary gene editing tool CRISPR. Real-world applications, ethical debates, and career opportunities are highlighted, fostering scientific thinking and systems understanding. Integrated audio support aids diverse learners. Vocabulary terms are defined, and students practice comprehension and higher-order analysis through multiple-choice and writing activities. Graphic organizers help visualize key ideas and cause-and-effect relationships, making complex biotechnology concepts accessible and relevant to grades 6-8.

CONTENT PREVIEW

genetic-engineering-2 — Genetic Technology and Biotechnology

Genetic technology and biotechnology are transforming how humans interact with the living world. By studying and changing DNA, scientists can solve crimes, improve health, and even modify plants and animals. These techniques provide powerful tools, but they also raise important questions about privacy and ethics. Understanding the science behind modern genetics helps us make informed decisions about its use in society.

Mechanisms of Genetic Technology
DNA fingerprinting is a method that examines unique patterns in an individual's genetic code. For example, in forensic science, investigators compare DNA samples from a crime scene with those of suspects to find matches. This process involves copying and sorting specific DNA regions, often using a technology called polymerase chain reaction (PCR). DNA fingerprinting can also determine biological relationships, like paternity testing. Another important technology is genetic testing, which screens a person’s genes for inherited conditions. For example, some tests look for mutations that increase the risk of diseases such as cystic fibrosis or sickle cell anemia. These technologies rely on the precise reading and analysis of DNA sequences, which contain instructions for building and operating living things.

Biotechnology in Action
Gene therapy aims to treat genetic diseases by replacing or repairing faulty genes. Scientists use vectors, such as modified viruses, to deliver corrected genes into human cells. In 2022, over 2,000 gene therapy trials were underway worldwide, showing how rapidly this field is growing. Genetic engineering goes a step further by directly modifying the DNA of organisms to give them new traits. Genetically modified organisms (GMOs) are common in agriculture; for example, some crops are engineered to resist pests or tolerate drought, increasing food production globally. Cloning creates genetically identical organisms, as seen when scientists cloned Dolly the sheep in 1996. More recently, the gene editing tool CRISPR has made it possible to edit specific genes with remarkable accuracy, opening new possibilities in disease treatment and research.

Ethical and Societal Impacts
While these technologies offer benefits, they also bring ethical challenges. For example, genetic data can reveal sensitive information, so privacy is a concern. The idea of “designer babies”—children whose genes are selected for certain traits—raises debates about fairness and what it means to be human. GMOs have sparked discussions about food safety and environmental impact. Scientists, policymakers, and the public must weigh risks and benefits before making decisions about biotechnology. Careers in genetics and biotechnology include forensic scientists, genetic counselors, research biologists, and agricultural engineers, all working to solve real-world problems using genetic knowledge.

Genetic technology and biotechnology show how understanding DNA allows us to influence life in powerful ways. These methods connect to larger scientific ideas about heredity, adaptation, and the interconnectedness of living systems. As these technologies advance, society will continue to face new questions and opportunities.

Interesting Fact: Using CRISPR, scientists have edited the genes of mosquitoes so they can no longer spread malaria, potentially saving millions of lives.

What does DNA fingerprinting help scientists do?

Identify individuals using unique DNA patternsMake food taste betterCreate new speciesProduce electricity

Which technology allows scientists to edit specific genes with great accuracy?

Gene therapyGenetic testingCRISPRCloning

What is one example of a real-world application of genetic engineering mentioned in the passage?

Making crops resistant to pestsBuilding bridgesGenerating solar powerDesigning smartphones

Which of these is a main concern about genetic technology according to the passage?

Privacy and ethical issuesToo many plantsAnimals running awayLack of clean water

What does 'genetic testing' mean in the passage?

Changing plant colorsChecking DNA for inherited conditionsMeasuring cell sizeMaking new animals

In the context of the passage, what does 'cloning' refer to?

Making genetically identical organismsMixing different speciesCleaning DNA samplesGrowing plants quickly