I think this is what you're asking.
Examples of Inherited Traits:
Attached or Free Earlobe. If you look closely at your earlobe, it might be a smooth line, or slightly dangly (free).
Allergies. The most common one I think is gluten.
Answer: Swim bladders of fish at depth help maintain buoyancy by regulating gas levels.
U got this so open your book/notes and look for the answer stop being lazy
Its important because they produce offspring. Without any offspring the species would slowly die off and become extinct.