Biology CLEP Prep Practice Exam

A gene is a unit of heredity that is passed on from parent to offspring. This means that the gene is responsible for transmitting genetic information from one generation to the next. B is incorrect because siblings do not necessarily inherit the same genes from their parents. While some genes may be common between siblings, each child inherits a unique combination of genes from their parents. C is incorrect because while a gene may determine a trait, it is not the same as a molecule. Genes are made up of DNA, which is a molecule, but the gene itself is not considered a molecule. D is incorrect because while genes are passed from parents to their offspring, they are not the only molecules that are passed down. DNA as a whole is also passed down, as well as other molecules that are important for the development and functioning of an organism. So while D may seem like a plausible answer, it is