heredity
if two different-colored paints are mixed they blend and original colours cannot be separated when two organisms sexual reproduction some characteristics dose to blend but others often vanish only to reappear in later generations to the austrian monk gregor johann mendel (1822-1884) this suggest that heredity - the link between generations - must obey some system of rules in the monastery gardens mendel carry out experiments on the common garden pea by carefully controlling which plant bred with which he recorded how characteristics as flower color were passed on mendel concluded that inherit characteristics do not blend but remain separate each characteristics is determined by two factors or elements one from each of each pair of factors one is often dominant meaning that it masks the other however the masked or recessive factor does disappear and it may because unmasked in later generations although mender's work was published in 1865 it was not until 20th century that its true important was finally appreciated