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SAT English QUESTION #5358
Question 1
Transgenic fish have genetic material from other species. Some contain jellyfish DNA, causing them to glow. Originally created for labs in the 90s, they became pets later and are now appearing in Brazilian rivers. A student suggests their escape from farms could lead to long-term ecological damage. Which quotation from a researcher would best support the student's assertion?
  • 'In one site in the wild where transgenic fish were observed, females outnumbered males, while in another the numbers of females and males were equivalent.'
  • 'Though some presence of transgenic fish in the wild has been recorded, there are insufficient studies of the impact of those fish on the ecosystems into which they are introduced.'
  • 'The ecosystems into which transgenic fish are known to have been introduced may represent a subset of the ecosystems into which the fish have actually been introduced.'
  • 'Through interbreeding, transgenic fish might introduce the trait of fluorescence into wild fish populations, making those populations more vulnerable to predators.'✔️
Correct Answer Explanation
Option D provides a specific negative ecological outcome (vulnerability to predators) resulting from the transgenic trait entering the wild population.