AP BIOLOGY

Detailed explanation-1: -A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.

Detailed explanation-2: -A trait, as related to genetics, is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both.

Detailed explanation-3: -The gene is considered the basic unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify physical and biological traits. Most genes code for specific proteins, or segments of proteins, which have differing functions within the body.

Detailed explanation-4: -Functional unit of gene is cistron. A cistron is a gene. The term cistron is used to emphasize that genes exhibit a specific behavior in a cis-trans test; distinct positions or loci within a genome are cistronic.

Detailed explanation-5: -Gene is the basic structural and functional unit of heredity.