Final answer:
The statement that genes are the basic physical and functional unit of heredity and contain information that codes for a product is true.
Step-by-step explanation:
Genes are indeed considered the basic physical and functional unit of heredity and contain the genetic code that instructs cells to produce proteins or RNA molecules. This statement is true. A gene is a sequence of DNA that encodes information for the synthesis of proteins or RNA, and proteins perform a plethora of functions within the cell, making them essential for life.
The genetic code is the correspondence between the sequence of bases in DNA or RNA and the sequence of amino acids in proteins, which is identified by groups of three nucleotides known as codons, each of which specifies a particular amino acid.