What is a gene? Choose the definition that best matches the term Gene. 1. A section of the DNA that can be replaced with RNA
2. A full set of chromosomes that tells the body how to work
3. A type of chromosome that helps you make proteins.
4. A section of the DNA that codes for a protein

its option 1.

Explanation:

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explanation:

i still can't find this

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.