Final answer:
Mendel followed the transmission of traits through several generations in peas. He discovered that traits are transmitted faithfully from parents to offspring independently of other traits and in dominant and recessive patterns.
Step-by-step explanation:
Mendel followed the transmission of traits through several generations in peas.
Working with pea plants, Mendel discovered that the factors that account for different traits in parents are discretely transmitted to offspring in pairs, one from each parent. He also determined that different characteristics, like seed color and seed texture, were transmitted independently of one another.
Through his experiments with nearly 30,000 pea plants, Mendel demonstrated that traits are transmitted faithfully from parents to offspring independently of other traits and in dominant and recessive patterns.