Colligative properties are those properties of solutions that depend on the number of dissolved particles in solution, but not on the identities of the solutes. For example, the freezing point of salt water is lower than that of pure water, due to the presence of the salt dissolved in the water.
Shares & Saves. Save. DNA testing evolved from the study of genetics, which began in the late 1800s when Gregor Mendel first studied the phenomenon of inherited traits in pea plants. His work laid the foundation for the discovery of DNA, or deoxyribonucleic acid, the molecules that contain our genetic makeup.
Technically speaking, the first IQ test was developed by French psychologist, Alfred Binet in 1905. His test has provided the base for all modern IQ tests that are widely used today. However, the interest of scientists and psychologists in intelligence dates back to thousands of years.owever, the history of IQ test doesn't end here as the term IQ or intelligence quotient was not born yet. We had just got the test but not the name. The idea that a test could actually determine a child's mental age became enormously popular and eminent scientists and psychologists started studying it.