Facts from Video, “What is a Gene?”

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. ... Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person's unique physical features. Scientists keep track of genes by giving them unique names.In biology, a gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA.

a gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA. It makes a individual different and unique from the other.

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the electromagnetic energy from the sun arrives in the form of visible and invisible light.