small double stranded DNA molecules that can exist independently of host chromosomes

### plasmids

## Step1: Identify the type of DNA### Determine that the DNA in question is double-stranded and can exist independently.## Step2: Recognize the independent nature### Understand that these DNA molecules are not part of the host cell's chromosomal DNA.## Step3: Name the DNA### Conclude that such independent, double-stranded DNA molecules are known as plasmids.