what controls traits and inheritance? gametes nucleic acids proteins temperature

The factor that directly controls traits and inheritance is nucleic acids , specifically DNA (and RNA in some viruses).

Quick Scoop: Why nucleic acids?

Think of nucleic acids as the instruction manual for building and running a living thing. They:

• Store genetic information in the sequence of their nucleotides.

• Determine which proteins get made, and proteins then shape most observable traits (like eye color, blood type, enzyme activity).

• Are passed from parents to offspring, so the instructions are inherited generation to generation.

So when a question asks:

“What controls traits and inheritance? gametes, nucleic acids, proteins, temperature”

the correct answer is nucleic acids.

But what about the others?

Here’s how each option fits in:

• Gametes (sperm and egg)
  • Carry and pass on nucleic acids (DNA) to the next generation.
  • They transmit genetic information but do not themselves “control” traits; the DNA inside them does.

• Proteins
  • Are built according to the DNA code and are responsible for many physical traits (like pigment, muscle proteins, enzymes).

* They **express** traits but do not store the heritable instructions.

• Temperature
  • An environmental factor that can influence how genes are expressed (for example, changing coat color in some animals or affecting development in plants).

* It can **modify** traits but does not control inheritance of the genetic information itself.

Simple way to remember

• Controls inheritance (the code itself): nucleic acids (DNA/RNA).

• Carries the code to the next generation : gametes.

• Builds the body from the code : proteins.

• Tweaks how the code shows up : temperature and other environmental factors.

Final classroom-style answer:
Traits and inheritance are controlled by nucleic acids.