Ais a clickable graphical object that makes something happen when the user clicks it, usually with the left mouse button.
a. mouse icon
b. key
c. button
d. focus window

4. does the kernel phenotype distribution support the idea that the cob is the result of a dihybrid cross? what information supports your answer? if a dihybrid cross (i.e. f1 to f2 of standard mendelian crosses) is not indicated what conditions might contribute to this finding.