Lecture 1 introduction and history of genetics. Heredity is the way genes transmit traits to offspring. The connection between parents and offspring was seen but not. Aristotle: males produce purified blood that mixed with female blood. Hippocrates: seeds produced in random parts of the body that are. Darwin: gemmules or pangenes were produced by every somatic cell. Preformatism vs neoformatism passed to the offspring, which gives the offspring those traits and tissue that came together at conception. Preformatism: the fetus is already fully developed, just small o o o o genomes. Genetic dissection: figuring out what genes do what (covered in more detail later) o o. The concept of homunculus: the concept that there were little babies in the sperm that were passed to the mother. Why do mother traits show up and why is only one baby formed. There was a preformed baby in the ova that the sperm stimulated its growth.