How was genetics discovered? In the 1860s Gregor Mendel discovered "factors" that determined inheritance of traits in plants (notice how many great discoveries appear first from work on plants) By 1906, Thomas Hunt Morgan showed that ‘genes’ are the "factors" that Mendel had discovered, and that genes are located on chromosomes. Then in 1944 Oswald Avery showed that genes are made of DNA! (We have come a long way). We now have sequenced the genomes of:

Which of the following accurately describes the correct order of events in the process of transpiration within a plant? a. water enters the roots, passes through the leaves, and leaks through the stem pores. b. water enters the roots, gets transported through the stem, and evaporates through the leaves. c. water is absorbed through the leaves, is transported through the stem, and nourishes the roots. d. water is absorbed through the leaves, nourishes the roots, and leaks through the stem pores.