Technological advances have a major influence on scientific thinking about evolutionary relationships. Technological advances have allowed for more up-to-date and accurate testing so that differences between species can be distinguished. Fossil finds, comparative anatomy and embryonic development model where the main finds used to date fossils. With updates in technological resources such as DNA hybridization, amino acid sequencing, and immunization dating techniques are much more accurate. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay DNA hybridization allows scientists to determine the genetic similarity between species and thus map their evolutionary paths more accurately. DNA hybridization on primates shows that humans are more closely related to chimpanzees than to gorillas. The process used to identify species includes: Heat unwinds and separates the strands that make up the double helix. Segments of DNA from two different species are cooled together. During cooling, hydrogen bonds reform between complementary base pairs. The degree of relatedness reflects the degree of genetic similarity between species. The degree of bonding is determined by the temperature required to separate the mixed strands again. This gave us new information, such as how humans are closely related to chimpanzees, but not to gorillas, even though the original theory was that we were closely related to gorillas. Amino Acid Sequencing Amino acid sequencing can be determined using technology that cuts the chain at certain points. and logically determine amino acid sequences. It can also be used to identify proteins synthesized according to a DNA code. Therefore, a polypeptide sequence reflects the DNA code, and similarities in the amino acid sequence imply that the organisms are closely related. Please note: this is just a sample. Get a custom paper from our expert writers now. Get a Custom Essay Studies on hemoglobin show that one of the four polypeptides (containing 146 amino acids) is identical for humans and chimpanzees. The same chain in gorillas has only 45 amino acids and immunization itself is an effective new technology to be able to see the precipitation rates and similarity between two species. The procedure involves injecting human serum into another mammal, such as a rabbit. The rabbit's immune system produced antibodies against these human proteins. Rabbit serum (containing antibodies to human proteins) can be used in tests with serum from other mammals. The amount of precipitation that occurs is a measure of the difference in some of their proteins, and this is an indirect measure of the relationships between mammals. Studies with immunization show that between humans and chimpanzees there is 97% precipitation. This technique is particularly useful for finding species that are closely related genetically but may have different physical characteristics, as well as for identifying animals belonging to the same family.