What are the similarities between selective breeding and genetic engineering?
Genetic engineering is the combining of DNA from different
species and can only be done in the laboratory. Traditional plant
and animal breeding stay within the species to get the desired
result. Some similarities: Both genetic engineering and selective
breeding result in modification of an organism's genotype. In other
words, the organism's genes are changed in some way. If one or more
genes from another species are introduced, the resulting genome
consists of recombinant DNA.
In both processes, an out side source is in control, rather than
natural selection. (Selective breeding is sometimes referred to as
artificial selection.) So humans decide which individual animals or
plants to retain in each generation.
And in both processes, the purpose is to make the livestock or
crop better from a human point of view.