Q: The production of multiple copies of a single gene is called? Choices: - cell cloning - gene variation - gene change - gene cloning A:
gene cloning

Q: Each pollen grain has two coverings: the exine (thicker, outer layer) and the what? Choices: - tube nucleus - pollen tube - cytoplasm - intine A:
intine

Q: Cardiovascular disease, some types of cancer, type 2 diabetes, and obesity are considered what kind of preventable diseases? Choices: - environmental diseases - atmosphere diseases - age diseases - lifestyle diseases A:
lifestyle diseases