They discovered DNA and RNA.

Meaning: This means that people found out about the molecules that contain the instructions for an organism's development and characteristics, and the molecules that help to make proteins.

Choice of Words: They refers to the people who studied life. Discovered means to find something that was previously unknown. DNA is a molecule that contains the instructions for an organism's development and characteristics. And is a conjunction used to connect words, phrases, or clauses. RNA is a molecule that helps to make proteins.

Alternative Expressions

Related Expressions

• Folic acid helps make DNA.
• They discovered a hidden treasure under the old oak tree.
• In the forest, they discovered a hidden waterfall.
• Finally, they discovered the lost toy under the couch.
• Curiosity ignited as they discovered new wonders.
• They discovered new things about themselves.
• In the attic, they discovered hidden treasures.
• They discovered new things every day on their adventures.
• They discovered a secret passageway.
• They discovered a hidden treasure while exploring the old house.