Biotechnology and Genetic Engineering

Biotechnology Overview

  • Biotechnology manipulates genes for useful products or societal benefits.

  • Key applications: genetic testing, agricultural improvements, and biomedical advancements.

Potential Careers

  • Skills in pipetting and lab techniques open financial opportunities in genetics and biotechnology.

  • Bioinformatics offers careers for those skilled in computer coding, focusing on creating databases and algorithms.

Antibiotics and Antivirals

  • Increasing bacterial resistance necessitates the development of new antibiotics.

  • Antiviral drugs are crucial, especially highlighted by the COVID-19 pandemic.

CRISPR Cas9 Technology

  • New gene editing technique revolutionizing biotechnology, enabling precise edits to DNA sequences (e.g., curing cystic fibrosis).

  • CRISPR technology received a Nobel Prize in 2012.

Applications of Biotechnology

  • Industrial uses for producing chemicals, enzymes, and agricultural improvements (e.g., enhancing crop nutrition).

  • Genetically Modified Organisms (GMOs) have been part of agriculture since the 1980s.

Recombinant DNA Technology

  • Involves combining DNA from two or more species to produce desired characteristics (e.g., making insulin).

  • Uses plasmids as vectors to introduce genes of interest into bacteria.

  • Restriction enzymes cut DNA at specific sequences, allowing for gene insertion.

PCR (Polymerase Chain Reaction)

  • Technique to amplify small DNA samples into larger quantities for analysis or cloning.

  • Comprises three main steps: Denaturation, Annealing, and Extension.

  • Taq Polymerase is used due to its stability at high temperatures.

Gel Electrophoresis

  • Technique used to separate DNA fragments based on size, aiding in DNA identification.

  • Useful for forensic applications, including paternity tests and crime scene investigations.

DNA Microarrays

  • Technology to analyze gene expression by comparing healthy and diseased cells.

  • Allows for identification of genes that are over- or under-expressed in conditions like cancer.

Ethical Implications of Biotechnology

  • Concerns about safety and long-term effects of GMOs and genetically modified products.

  • Continuous research is necessary to monitor the health implications of biotechnology applications, especially in food.