DNA-DNA hybridization

DNA-DNA hybridization is a laboratory technique used to compare the genetic similarity between two DNA samples. It involves extracting DNA from two organisms, heating them to separate their strands, then slowly cooling to allow strands with complementary sequences to bond together. The more similar the sequences, the more stable the hybrid double strands. By measuring how well the DNA from each source pairs up, scientists can determine how closely related the organisms are at the genetic level. This method helps in studying evolutionary relationships and classifying species based on their genetic makeup.