Term for a branch of molecular biology for researching the structure of the genome (genetic material) and the function and interaction of genes ( chromosome of each cell nucleus on the DNA strand). Genetic engineering or genetic engineering is the application of genetic methods in practice and usually involves the artificial manipulation of genes with the aim of introducing desired new, previously non-existent characteristics, such as resistance to fungal diseases, into an existing organism by implanting individual replicated foreign genes from foreign organisms into the genome of a variety or breed.

Since the invention of the PCR method (polymerase chain reaction) for the amplification of minute amounts of DNA in the 1990s, grape varieties can now also be clearly defined with the help of molecular genetic characterisation methods. This introduced the genotype into ampelography, which can help to clarify many unanswered questions as a supplement to traditional, visual phenotype-based ampelography.
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Sigi Hiss
freier Autor und Weinberater (Fine, Vinum u.a.), Bad Krozingen