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A. From the mutation of existing genes only

B. From the duplication, and then the mutation of existing genes
D. From a different species
C. From duplicating existing genes

B. From the duplication, and then the mutation of existing genes.

B. From the duplication, and then the mutation of existing genes

Did you know?

Did you know that new genes can arise in different ways? One way is through the mutation of existing genes, which can lead to unique traits and characteristics within a species (A). Another way is through the duplication of existing genes, followed by mutations in the duplicated set, which can create additional copies of genes with modified functions (B). Surprisingly, genes can also come from a different species altogether, a phenomenon known as horizontal gene transfer (D). Lastly, genes can be formed by duplicating existing genes within the same species, providing redundancy or the opportunity for evolutionary experimentation (C). This diverse range of gene formation mechanisms highlights the incredible adaptability and complexity of life on our planet.