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Rus_ich [418]
3 years ago
10

What makes up genes? Explain in 1 paragraph please

Biology
2 answers:
Angelina_Jolie [31]3 years ago
8 0

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. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project estimated that humans have between 20,000 and 25,000 genes.

Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. 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.

iVinArrow [24]3 years ago
4 0

Answer:    Genes are made up of DNA

Explanation:   Genes are made up of DNA . to be more precise each gene is   made out of possibly  25 000 dna to 2 million dna.

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