input: OPTIONS:
- prokaryotes
- dna
- genes
- chromosomes Now, answer this question: Q: Changes in the number of what can lead to disorders like down syndrome? A:
A:
output: chromosomes

input: OPTIONS:
- thermometer
- barometer
- altimeter
- manometer Now, answer this question: Q: The pressure of a sample of gas is measured with an open-end what? A:
A:
output: manometer

input: OPTIONS:
- viral
- lethal
- biological
- bacterial Now, answer this question: Q: Antibiotic drugs are usually effective in treating what kind of infections? A:
A:
output:
bacterial