What is the smallest piece of genetic information that is the key functional unit in hereditary transmission

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A gene is the smallest piece of genetic information that is the key functional unit in hereditary transmission. Genes are segments of DNA that are responsible for producing a specific functional product, such as a protein. Chromosomes are made up of many genes, while DNA is the molecule that carries the genetic information. A zygote is a fertilized egg cell that contains genetic information from both parents.

What Is the Smallest Piece of Genetic Information That Is