Evolution Quote by Jennifer A. Doudna
““every single CRISPR region had expanded to include a new snippet of DNA spliced between the repeats. Furthermore, these new spacers perfectly matched the DNA of the phage to which that strain was now immune.””
About This Quote
Source Scientific paper: “CRISPR‑Cas adaptive immunity in bacteria”, 2015
Bacteria acquire new DNA spacers matching phage DNA, granting immunity against that phage.
In simple terms: Bacteria learn to recognize and block viruses.
Key Takeaway
Leverage adaptive immunity concepts.
Themes
genetics
immunity
evolution
biotechnology
Mood
analytical
scientific
Type
educational
research
When to use this quote
- lab research
- biotech development
- medical therapies
Key Concepts
CRISPR
spacer acquisition
phage resistance
Questions to Reflect On
- How can we harness spacer acquisition for gene editing?
- What ethical concerns arise from programmable immunity?
A Different Perspective
Complexity of spacer integration can cause off‑target effects.
![“Perhaps no order of mammals presents us with so extraordinary a series of gradations as this [step by step, from humans to apes to monkeys to lemurs] - leading us insensibly from the crown and summit of the animal creation down to creatures, from which there is but a step, as it seems, to the…” quote by Thomas Huxley](https://sms4smile.com/quotes/img-quotes/f0b/thomas-huxley-1183_animal_perhaps-no-order-of-mammals-presents-us_3051.jpg)
