Part 2: Monohybrid Cross. How much genotypic variation do you find in the randomly picked parents of your crosses? How much in the offspring? How much phenotypic variation? Is the ratio of observed phenotypes the same as the ratio of predicted phenotypes? Why or why not? Pool all of the offspring from your five replicates.
answer 2. The combine harvester, or simply combine, is a machine that harvests grain crops. The first harvesting machines were devised by Patrick Bell in Scotland and Cyrus Hall McCormick in the United States. McCormick invented his first reaper at the age of 22 and tested it in a neighbor's field in 1831.he first harvesting machines were devised by Patrick Bell in Scotland and Cyrus Hall McCormick in the United States. McCormick invented his first reaper at the age of 22 and tested it in a neighbor's field in 1831.
1824 At the age of 15, he invented a lightweight cradle for carting harvested grain 1831 Cyrus improves the reaper designed by his father Robert McCormick 1834 Patent issued to Cyrus McCormick as the inventor of the mechanical reaper 1847 a factory is constructed in Chicago to produce 500 reapers for the 1848 harvest 1859 Brothers Leander and William each receive one-fourth of the Cyrus McCormick & Brothers Co.